Univ.-Prof. Mag. Dr. Helmut Ritsch

Professor, Head of the Institute

Room: 4S25 ITP
Phone: +43 512 507 52213
Email: Helmut.Ritsch[at]uibk.ac.at

Research group: Cavity Quantum Electrodynamics

More Information

  • Curriculum Vitae
  • Personal Homepage
  • FLD Research Documentation

    Publications 2018

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Keller, T.; Torggler, V.; Jäger, S.; Schütz, S.; Ritsch, H.; Morigi, G. (efirst): Quenches across the self-organization transition in multimode cavities.
      In: New Journal of Physics. (DOI) (Web link)



    Publications 2017

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Ebongue, C.; Holzmann, D.; Ostermann, S.; Ritsch, H. (2017): Generating a stationary infinite range tractor force via a multimode optical fibre.
      In: Journal of Optics 19, No. 065401. (DOI) (Web link)

    • Gietka, K.; Wasak, T.; Chwedenczuk, J.; Piazza, F.; Ritsch, H. (2017): Quantum-enhanced interferometry with cavity QED-generated non-classical light.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 71/11, No. 273. (DOI) (Web link)

    • Haslinger, P.; Jaffe, M.; Xu, V.; Schwartz, O.; Sonnleitner, M.; Ritsch-Marte, M.; Ritsch, H.; Müller, H. (2017): Attractive force on atoms due to blackbody radiation.
      In: Nature Physics. (DOI) (Web link)

    • Hebenstreit, M.; Kraus, B.; Ostermann, L.; Ritsch, H. (2017): Subradiance via Entanglement in Atoms with Several Independent Decay Channels.
      In: Physical Review Letters 118/14, No. 143602. (DOI) (Web link)

    • Mivehvar, F.; Piazza, F.; Ritsch, H. (2017): Disorder-Driven Density and Spin Self-Ordering of a Bose-Einstein Condensate in a Cavity.
      In: Physical Review Letters 119/6, No. 063602. (DOI) (Web link)

    • Mivehvar, F.; Ritsch, H.; Piazza, F. (2017): Superradiant Topological Peierls Insulator inside an Optical Cavity.
      In: Physical Review Letters 118/7, No. 073602. (DOI) (Web link)

    • Ostermann, S.; Piazza, F.; Ritsch, H. (2017): Probing and characterizing the growth of a crystal of ultracold bosons and light.
      In: New Journal of Physics 19. (DOI) (Web link)

    • Plankensteiner, D.; Sommer, C.; Ritsch, H.; Genes, C. (2017): Cavity Antiresonance Spectroscopy of Dipole Coupled Subradiant Arrays.
      In: Physical Review Letters 119/9, No. 093601. (DOI) (Web link)

    • Torggler, V.; Krämer, S.; Ritsch, H. (2017): Quantum annealing with ultracold atoms in a multimode optical resonator.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 95/3, No. 032310. (DOI) (Web link)

    Other Publications

    Electronic Publication, Scientific
    • Gietka, K.; Wasak, T.; Chwedenczuk, J.; Piazza, F.; Ritsch, H. (2017): Enhancing interferometric sensitivity by non-classical light from quantum non-demolition measurements in cavity QED. (Web link)

    • Krämer, S.; Plankensteiner, D.; Ostermann, L.; Ritsch, H. (2017): QuantumOptics.jl: A Julia framework for simulating open quantum systems. (Web link)



    Lectures 2017

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Subradiance and entanglement in atomic systems with several decay channels.
      Quantum Optics IX, Gdansk, 2017-09-21. (Web link)

    • Lecturer(s): Ritsch, H.: Superfluorescence of a 1D chain of clock atoms coupled to an optical fiber.
      ONNA 2017: Optical Nanofibre Applications: From Quantum to Bio Technologies, Okinawa, 2017-06-08. (Web link)

    • Lecturer(s): Ritsch, H.: Superfluorescence of a 1D chain of clock atoms coupled to a multimode optical fiber.
      DINAMO 2017, Siglufjordur, 2017-05-19. (Web link)

    • Lecturer(s): Ritsch, H.: Superfluorescence of a 1D chain of clock atoms in a hollow optical fiber.
      Workshop on quantum light-matter interactions in low dimensions, Barcelona, 2017-05-04. (Web link)

    Conference Lecture (Upon Registration)
    • Lecturer(s): Ritsch, H.: Nonlinear force dependence on optically bound micro-particle arrays in the evanescent fields of fundamental and higher order microfibre modes.
      Optical Trapping and Optical Micromanipulation XIV, San Diego, 2017-08-10. (Web link)

    Poster Presentation
    • Lecturer(s): Jungkind, A. Co-author(s): Ritsch, H.: Cavity Cooling in the Blue Detuned Regime.
      37. SFB FoQuS meeting, Innsbruck, 2017-07-13. (Web link)

    • Lecturer(s): Jungkind, A. Co-author(s): Ritsch, H.: Cavity Cooling in the Blue Detuned Regime.
      DK-ALM Summer School, Pertisau, 2017-07-05. (Web link)

    • Lecturer(s): Jungkind, A. Co-author(s): Ritsch, H.: Cavity Cooling in the Blue Detuned Regime.
      DK-ALM Science Day, Innsbruck, 2017-01-31.

    • Lecturer(s): Ostermann, S. Co-author(s): Piazza, F.; Ritsch, H.: Growing, probing and characterizing a Crystal of ultracold bosons and light.
      36. SFB FoQuS meeting, Innsbruck, 2017-03-30. (Web link)

    • Lecturer(s): Plankensteiner, D. Co-author(s): Sommer, C.; Ritsch, H.; Genes, C.: Cavity antiresonance spectroscopy of dipole coupled subradiant arrays.
      DK-ALM Summer School, Pertisau, 2017-07-05. (Web link)

    • Lecturer(s): Torggler, V. Co-author(s): Krämer, S.; Ritsch, H.: Quantum annealing with ultracold atoms in a multimode optical resonator.
      DK-ALM Summer School, Pertisau, 2017-07-05. (Web link)



    Publications 2016

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Huber, T.; Ostermann, L.; Prilmüller, M.; Solomon, G.S.; Ritsch, H.; Weihs, G.; Predojevic, A. (2016): Coherence and degree of time-bin entanglement from quantum dots.
      In: Physical Review B (Condensed Matter) 93, No. 201301. (DOI) (Web link)

    • Krämer, S.; Ostermann, L.; Ritsch, H. (2016): Optimized geometries for future generation optical lattice clocks.
      In: Europhysics Letters 114, Nr. 14003. (DOI) (Web link)

    • Maimaiti, A.; Holzmann, D.; Truong, V.G.; Ritsch, H.; Chormaic, S.N. (2016): Nonlinear force dependence on optically bound micro-particle arrays in the evanescent fields of fundamental and higher order microfibre modes.
      In: Scientific Reports 6, Article 30131. (DOI) (Web link)

    • Ostermann, S.; Piazza, F.; Ritsch, H. (2016): Spontaneous Crystallization of Light and Ultracold Atoms.
      In: Physical Review X 6, Nr. 021026. (DOI) (Web link)

    • Plankensteiner, D.; Schachenmayer, J.; Ritsch, H.; Genes, C. (2016): Laser noise imposed limitations of ensemble quantum metrology.
      In: Journal Of Physics B: Atomic Molecular And Optical Physics 49/24, Nr. 245501. (DOI) (Web link)

    Journal Article (Proceedings Paper)
    • Ostermann, Laurin; Huber, Tobias; Prilmüller, Maximilian; Solomon, Glenn; Ritsch, Helmut; Weihs, Gregor; Predojevic, Ana (2016): Coherent two-photon excitation of quantum dots.
      In: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) 9900, Nr. 99000T. (DOI) (Web link)

    Other Publications

    Electronic Publication, Scientific
    • Holzmann, D.; Ritsch, H. (2016): Tailored long range forces on polarizable particles by collective scattering of broadband radiation. (Web link)



    Lectures 2016

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: A self-ordered atom–photon crystal in 3D via collective coherent backscattering.
      Workshop "Strongly disordered optical systems : from the white paint to cold atoms", Cargese, 2016-09-27. (Web link)

    • Lecturer(s): Ritsch, H.: Spontaneous crystallization of light and ultracold atoms in free space.
      CoScaLi IV: Workshop on Collective Scattering of Light, Ubatuba, 2016-05-09. (Web link)

    • Lecturer(s): Ritsch, H.: Cavity ground state cooling: from opto-mechanics to ultracold quantum gases.
      Continuous atomic sources and extreme cooling of atoms and molecules: techniques and applications (Workshop), Les Houches, 2016-01-26. (Web link)

    • Lecturer(s): Ritsch, H. Co-author(s): Ostermann, S.; Piazza, F.: Spontaneous crystallisation of a BEC and light in 1D trap.
      Quantum Simulations and Many-Body Physics with Light (Qlight 2016), Chania, 2016-06-06. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Ritsch, H.: Optical-transition clocks with micro-fabricated frequency combs for performance beyond the standard quantum limit.
      Quantum Assisted Sensing And Readout (QuASAR) Program Review Meeting, Boulder, 2016-04-06.

    Poster Presentation
    • Lecturer(s): Huber, Tobias Co-author(s): Ostermann, Laurin; Prilmüller, Maximilian; Solomon, Glenn; Ritsch, Helmut; Weihs, Gregor; Predojevic, Ana: Coherence and degree of time-bin entanglement from quantum dots.
      9th International Conference on Quantum Dots (QD2016), Jeju, 2016-05-23. (Web link)

    • Lecturer(s): Ostermann, S. Co-author(s): Piazza, F.; Ritsch, H.: Spontaneous Crystallization of Light and Ultracold Atoms.
      International Conference on Quantum Optics 2016, Obergurgl, 2016-02-22. (Web link)

    • Lecturer(s): Torggler, V. Co-author(s): Krämer, S.; Ritsch, H.: Quantum annealing with ultracold atoms in a multimode optical resonator.
      35. SFB FoQuS Meeting, Wien, 2016-12-15. (Web link)

    • Lecturer(s): Torggler, V. Co-author(s): Krämer, S.; Ritsch, H.: Quantum annealing with ultracold atoms in a multimode optical resonator.
      Quantum gases and quantum coherence (BEC2016), Salerno, 2016-09-02. (Web link)



    Publications 2015

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Bakhtiari, M.; Hemmerich, A.; Ritsch, H.; Thorwart, M. (2015): Nonequilibrium Dicke Quantum Phase Transition of an Ultracold Gas in an Optical Cavity.
      In: Physical Review Letters 114, No. 123601. (DOI) (Web link)

    • Hinkel, T.; Ritsch, H.; Genes, C. (2015): A Realization of a Quasi-Random Walk for Atoms in Time-Dependent Optical Potentials.
      In: Atoms 3/3, pp. 433 - 449. (DOI) (Web link)

    • Holzmann, D.; Ritsch, H. (2015): Collective scattering and oscillation modes of optically bound point particles trapped in a single mode waveguide field.
      In: Optics Express 23/25, pp. 31793 - 31806. (DOI) (Web link)

    • Krämer, S.; Ritsch, H. (2015): Generalized mean-field approach to simulate the dynamics of large open spin ensembles with long range interactions.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 69, No. 282. (DOI) (Web link)

    • Ostermann, S.; Griesser, T.; Ritsch, H. (2015): Atomic self-ordering in a ring cavity with counterpropagating pump fields.
      In: Europhysics Letters 109, No. 43001. (DOI) (Web link)

    • Piazza, F.; Ritsch, H. (2015): Self-Ordered Limit Cycles, Chaos, and Phase Slippage with a Superfluid inside an Optical Resonator.
      In: Physical Review Letters 115, No. 163601. (DOI) (Web link)

    • Plankensteiner, D.; Ostermann, L.; Ritsch, H.; Genes, C. (2015): Selective protected state preparation of coupled dissipative quantum emitters.
      In: Scientific Reports 5, No. 16231. (DOI) (Web link)

    • Sandner, R.; Niedenzu, W.; Piazza, F.; Ritsch, H. (2015): Self-ordered stationary states of driven quantum degenerate gases in optical resonators.
      In: Europhysics Letters 111/5, No. 53001. (DOI) (Web link)

    • Winterauer, D.; Niedenzu, W.; Ritsch, H. (2015): Multistable particle-field dynamics in cavity-generated optical lattices.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 91, No. 053829. (DOI) (Web link)



    Lectures 2015

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Atom-light interactions in 1D waveguides.
      COST-NQO Working Group 4 Kickoff Meeting on "Cooperative effects, correlations and many-body physics tailored by strongly confined optical fields", Barcelona, 2015-09-14. (Web link)

    • Lecturer(s): Ritsch, H.: Light induced self-ordering & collective dynamics of point scatterers close to a nanofiber.
      Light matter interactions in low dimensions, Cambridge, 2015-07-01. (Web link)

    • Lecturer(s): Ritsch, H.: Self-ordering and adaptive light collection by mobile scatterers in resonators.
      DINAMO 2015: Discussions on Nao & Mesoscopic Optics, El Chaltén, 2015-04-11. (Web link)

    Conference Lecture (Upon Registration)
    • Lecturer(s): Holzmann, Daniela Co-author(s): Sonnleitner, M.; Ritsch, Helmut: Self-ordering and collective dynamics of transversely illuminated point-scatterers in a 1D trap.
      ONNA Optical Nanofiber Applications: From Quantum to Bio Technologies, Okinawa, 2015-05-25. (Web link)

    • Lecturer(s): Ostermann, Stefan Co-author(s): Grießer, Tobias; Ritsch, Helmut: Atomic selfordering in a ring cavity with counterpropagating pump fields.
      Young Atom Opticians Conference (YAO 2015), Zürich, 2015-04-20. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Ritsch, Helmut: Optical-transition clocks with micro-fabricated frequency combs for performance beyond the standard quantum limit I.
      DARPA Quantum Assisted Sensing And Readout (QuASAR), Boston, MA, 2015-03-24. (Web link)

    Poster Presentation
    • Lecturer(s): Holzmann, Daniela Co-author(s): Sonnleitner, M.; Ritsch, Helmut: Self-ordering and collective dynamics of transversely illuminated point-scatterers in a 1D trap.
      Winterschool on Non-Equilibrium Quantum Systems: Theory and Experimental Implementation, Obergurgl, 2015-04-08. (Web link)

    • Lecturer(s): Holzmann, Daniela Co-author(s): Sonnleitner, M; Ritsch, Helmut: Self-ordering and collective dynamics of transversely illuminated point-scatterers in a 1D trap.
      29. SFB Foqus Meeting, Innsbruck, 2015-03-12. (Web link)

    • Lecturer(s): Krämer, S Co-author(s): Ostermann, L.; Ritsch, H.: Optimized geometries for future generation optical lattice clocks.
      31. SFB FOQUS Meeting, Wien, 2015-12-17. (Web link)

    • Lecturer(s): Krämer, Sebastian Co-author(s): Ritsch, Helmut: Multicolor Selforganization.
      Winterschool on Non-Equilibrium Quantum Systems: Theory and Experimental Implementation, Obergurgl, 2015-04-07. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Plankensteiner, D.; Ritsch, H.; Genes, C.: Protected state Ramsey spectroscopy.
      Joint 2015 Annual Meeting of the Austrian Physical Society (Österreichische Physikalische Gesellschaft, ÖPG) and the Swiss Physical Society, Wien, 2015-09-01. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Plankensteiner, D.; Ritsch, H.; Genes, C.: Protected Subspace Ramsey Spectroscopy.
      29. SFB Foqus Meeting, Innsbruck, 2015-03-12. (Web link)

    • Lecturer(s): Ostermann, S. Co-author(s): Piazza, F.; Ritsch, H.: Dynamical crystallization of light and matter.
      31. SFB FOQUS Meeting, Wien, 2015-12-17. (Web link)

    • Lecturer(s): Ostermann, St. Co-author(s): Griesser, T.; Ritsch, H.: Atomic self-ordering in a ring cavity with counterpropagating pump fields.
      Joint 2015 Annual Meeting of the Austrian Physical Society (Österreichische Physikalische Gesellschaft, ÖPG) and the Swiss Physical Society, Wien, 2015-09-01. (Web link)

    • Lecturer(s): Ostermann, Stefan Co-author(s): Griesser, T.; Ritsch, Helmut: Atomic self-ordering in a ring cavity with counterpropagating pump fields.
      Winterschool on Non-Equilibrium Quantum Systems: Theory and Experimental Implementation, Obergurgl, 2015-04-08. (Web link)

    • Lecturer(s): Ostermann, Stefan Co-author(s): Griesser, T.; Ritsch, Helmut: Atomic self-ordering in a ring cavity with counterpropagating pump fields.
      29. SFB Foqus Meeting, Innsbruck, 2015-03-12. (Web link)

    • Lecturer(s): Prilmüller, Maximilian Co-author(s): Huber, Tobias; Ostermann, Laurin; Solomon, Glen; Ritsch, Helmut; Weihs, Gregor; Predojevic, Ana: Proceedings on time bin entangled photons from a semiconductor quantum dot.
      European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference (CLEO Europe / EQEC 2015), München, 2015-06-25. (Web link)

    • Lecturer(s): Prilmüller, Maximilian Co-author(s): Huber, Tobias; Ostermann, Laurin; Solomon, Glenn; Ritsch, Helmut; Weihs, Gregor; Predojevic Ana: Proceedings on time bin entangled photons from a semiconductor quantum dot.
      Joint 2015 Annual Meeting of the Austrian Physical Society (Österreichische Physikalische Gesellschaft, ÖPG) and the Swiss Physical Society, Wien, 2015-09-01. (Web link)

    • Lecturer(s): Torggler, V. Co-author(s): Ritsch, H.: Multi-frequency self-organization in optical lattices in cavities.
      31. SFB FOQUS Meeting, Wien, 2015-12-17. (Web link)

    • Lecturer(s): Torggler, V. Co-author(s): Ritsch, H.: Adaptive multifrequency light collection by self-ordered mobile scatterers in optical resonators.
      Joint 2015 Annual Meeting of the Austrian Physical Society (Österreichische Physikalische Gesellschaft, ÖPG) and the Swiss Physical Society, Wien, 2015-09-01. (Web link)

    • Lecturer(s): Torggler, Valentin Co-author(s): Ritsch, Helmut: Adaptive particle dynamics in multi-frequency cavity light.
      Winterschool on Non-Equilibrium Quantum Systems: Theory and Experimental Implementation, Obergurgl, 2015-04-07. (Web link)

    • Lecturer(s): Torggler, Valentin; Ritsch, Helmut: Adaptive multifrequency light collection by self-ordered mobile scatterers in optical resonators.
      Young Atom Opticians Conference (YAO 2015), Zürich, 2015-04-22. (Web link)



    Publications 2014

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Holzmann, D.; Sonnleitner, M.; Ritsch, H. (2014): Self-ordering and collective dynamics of transversely illuminated point-scatterers in a 1D trap.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 68, No. 352. (DOI)

    • Krämer, S.; Ritsch, H. (2014): Self-ordering dynamics of ultracold atoms in multicolored cavity fields.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 90, No. 033833. (DOI) (Web link)

    • Maier, T.; Krämer, S.; Ostermann, L.; Ritsch, H. (2014): A superradiant clock laser on a magic wavelength optical lattice.
      In: Optics Express 22/11, pp. 13269 - 13279. (DOI) (Web link)

    • Ostermann, L.; Plankensteiner, D.; Ritsch, H.; Genes, C. (2014): Protected subspace Ramsey spectroscopy.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 90, No. 053823. (DOI)

    • Ostermann, S.; Sonnleitner, M.; Ritsch, H. (2014): Scattering approach to two-colour light forces and self-ordering of polarizable particles.
      In: New Journal of Physics 16, No. 043017. (DOI) (Web link)

    • Torggler, V.; Ritsch, H. (2014): Adaptive multifrequency light collection by self-ordered mobile scatterers in optical resonators.
      In: Optica 1/5, pp. 336 - 342. (DOI) (Web link)

    Proceedings Article (Full Paper)
    • Ostermann, L.; Ritsch, H.; Genes, C. (2014): Protected State Enhanced Quantum Metrology in Dense Ensembles of Two-Level Systems.
      In: Quantum Information and Measurement - Quantum Simulation & Quantum Metrology (2014). Washington, DC: The Optical Society (OSA) (= Research in Optical Sciences), ISBN 978-1-55752-995-4, Paper QTh3A.5. (DOI)

    • Sandner, K.; Ritsch, H. (2014): Upconversion lasing, heat transfer and stimulated cooling in solids.
      In: Epstein, Richard I.; Seletskiy, Denis V.; Sheik-Bahae, Mansoor: Laser Refrigeration of Solids VII. San Francisco, California, United States, February 01, 2014. Washington: SPIE (= SPIE, 9000), elektronisch. (DOI)

    Other Publications

    Electronic Publication, Scientific
    • Hinkel, T.; Griesser, T.; Ritsch, H.; Genes, C. (2014): A cavity QED realization of a quasi-random walk for atoms. (Web link)



    Lectures 2014

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Selfordering and long range interactions in cavities.
      CCQED Final meeting, Aarhus, 2014-10-30. (Web link)

    • Lecturer(s): Ritsch, H.: Selfordering of an (ultra-)cold gas in a resonator field.
      Quantum Science: Implementations, Benasque, 2014-07-10. (Web link)

    • Lecturer(s): Ritsch, H.: Subrecoil cooling and atomic selfordering in high Q cavities: a numerical study.
      SFB925 Theory Workshop on "Quantum dynamics in systems with many coupled degrees of freedom: challenges for theory", Hamburg, 2014-03-24. (Web link)

    Conference Lecture (Upon Registration)
    • Lecturer(s): Ritsch, H.: Temperature gradient driven lasing and stimulated cooling.
      OPTO -SPIE Photonics West Conference, San Francisco, 2014-02-02. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Ritsch, H.: Optical-transition clocks with micro-fabricated frequency combs for performance beyond the standard quantum limit.
      DARPA Quantum Assisted Sensing And Readout (QUASAR) Program Review Meeting, Long Beach, 2014-01-29. (Web link)

    Poster Presentation
    • Lecturer(s): Niedenzu, W. Co-author(s): Griesser, T.; Ritsch, H.: Kinetic theory of cavity cooling and self-organisation of a cold gas.
      2014 COST meeting on Fundamental Problems in Quantum Physics, Rehovot, 2014-03-24. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Plankensteiner, D.; Ritsch, H.; Genes, C.: Protected Subspace Ramsey Spectroscopy.
      27th SFB Foqus Meeting, Innsbruck, 2014-10-09. (Web link)

    • Lecturer(s): Ostermann, S. Co-author(s): Sonnleitner, M.; Ritsch, H.: Scattering approach to multicolour light forces and self-ordering of polarizable particles.
      Ultracold Atoms and Precision Measurements, Les Houches, 2014-09-16. (Web link)

    • Lecturer(s): Ostermann, S. Co-author(s): Sonnleitner, M.; Ritsch, H.: Scattering approach to multicolour light forces and self-ordering of polarizable particles.
      International Conference on Quantum Optics 2014, Obergurgl, 2014-02-25. (Web link)

    • Lecturer(s): Ritsch, H.: Superradiant clock laser in a magic wavelength lattice.
      International Conference on Quantum Optics 2014, Obergurgl, 2014-02-24. (Web link)

    • Lecturer(s): Sandner, R. Co-author(s): Niedenzu, W.; Ritsch, H.: Numerical Simulations of Ultracold Quantum Particles.
      CCQED Final meeting, Aarhus, 2014-10-29. (Web link)

    • Lecturer(s): Sonnleitner, M. Co-author(s): Ritsch-Marte, M.; Ritsch, H.: Attractive optical forces from black-body radiation.
      International Conference on Quantum Optics 2014, Obergurgl, 2014-02-25. (Web link)

    Guest Lectures

    Guest Lecture
    • Lecturer(s): Ritsch, H.: Quantum Optics with Ultracold Quantum Gases: Towards the Full Quantum Regime of the Light-Matter Interaction.
      Universität Bonn, Bonn, 2014-11-11. (Web link)



    Publications 2013

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Boukobza, E.; Ritsch, H. (2013): Breaking the Carnot limit without violating the second law: A thermodynamic analysis of off-resonant quantum light generation.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 87/6, p. 063845. (DOI) (Web link)

    • Griesser, T.; Ritsch, H. (2013): Light-Induced Crystallization of Cold Atoms in a 1D Optical Trap.
      In: Physical Review Letters 111/5, p. 055702. (DOI) (Web link)

    • Niedenzu, W.; Schütz, S.; Habibian, H.; Morigi, G.; Ritsch, H. (2013): Seeding patterns for self-organization of photons and atoms.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 88, No. 033830. (DOI) (Web link)

    • Ostermann, L.; Ritsch, H.; Genes, C. (2013): Protected State Enhanced Quantum Metrology with Interacting Two-Level Ensembles.
      In: Physical Review Letters 111/12, p. 123601. (DOI) (Web link)

    • Ritsch, H.; Domokos, P.; Esslinger, T.; Brennecke, F. (2013): Cold atoms in cavity-generated dynamical optical potentials.
      In: Reviews of Modern Physics 85/2, pp. 553 - 601. (DOI) (Web link)

    • Sandner, R.; Niedenzu, W.; Ritsch, H. (2013): Subrecoil cavity cooling towards degeneracy: A numerical study.
      In: Europhysics Letters 104/4, No. 43001. (DOI) (Web link)

    • Sonnleitner, M; Ritsch-Marte, M.; Ritsch, H. (2013): Attractive Optical Forces from Blackbody Radiation.
      In: Physical Review Letters 111/2, No. 023601. (DOI) (Web link)

    Book Chapter (Original Paper)
    • Zoubi, H.; Ritsch, H. (2013): Chapter 3 - Excitons and Cavity Polaritons for Optical Lattice Ultracold Atoms.
      In: Arimondo, E.; Berman, P.; Lin, C.: Advances in Atomic, Molecular, and Optical Physics. Volume 62. San Diego [u.a.]: Academic Press (= 62, Advances in Atomic, Molecular, and Optical Physics), ISBN 978-0-12-408090-4, pp. 171 - 229. (DOI)



    Lectures 2013

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Ultracold Atom Cavity QED.
      Artificial Atoms: from Quantum Physics to Applications, Budapest, 2013-05-20. (Web link)

    • Lecturer(s): Ritsch, H.: Cavity Cooling.
      KITP Conference: New Science with Ultracold Molecules, Santa Barbara, 2013-03-11. (Web link)

    Conference Lecture (Upon Registration)
    • Lecturer(s): Ritsch, H. Co-author(s): Ritsch-Marte, M.: Light scattering, optomechanical trapping, strain and deformation of elastic dielectric objects.
      Optics in the Life Sciences, Hawaii, 2013-04-16. (Web link)

    • Lecturer(s): Sonnleitner, M. Co-author(s): Ritsch-Marte, Monika; Ritsch, Helmut: Attractive optical forces from black-body radiation.
      Young Atom Opticians Conference (YAO 2013), Birmingham, 2013-04-10. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Ostermann, L. Co-author(s): Ritsch, H.; Genes, C.: Protected state enhanced quantum metrology.
      DARPA, Quantum Assisted Sensing And Readout (QuASAR) review meeting, Boulder, 2013-03-05. (Web link)

    • Lecturer(s): Ritsch, H.: Quantum control and self-organization.
      Seminar "Quantum and classical models for computing, control and learning", Innsbruck, 2013-06-11.

    • Lecturer(s): Ritsch, H.: Cascaded collective decay in regular arrays of cold trapped atoms.
      DARPA, Quantum Assisted Sensing And Readout (QuASAR) review meeting, Boulder, 2013-03-05. (Web link)

    Poster Presentation
    • Lecturer(s): Genes, C. Co-author(s): Ostermann, L.; Ritsch, H.: Protected-state enhanced quantum metrology with dense two-level systems Ensembles.
      21st SFB-FoQuS Meeting, Innsbruck, 2013-07-11.

    • Lecturer(s): Krämer, S. Co-author(s): Ritsch, H.: Efficient wave function simulations in nonlinear quantum optics using an adaptive coherent state Basis.
      19th SFB-FoQuS Meeting, Innsbruck, 2013-02-28.

    • Lecturer(s): Niedenzu, W. Co-author(s): Sandner, R.; Genes, C.; Ritsch, H.: Quantum-correlated motion and heralded entanglement of distant optomechanically coupled objects.
      Long-range interactions in the ultracold, Stuttgart, 2013-09-04. (Web link)

    • Lecturer(s): Niedenzu, W. Co-author(s): Sandner, R.; Ritsch, H.: Subrecoil cavity cooling down to degeneracy: a numerical study.
      21st SFB-FoQuS Meeting, Innsbruck, 2013-07-11.

    • Lecturer(s): Ostermann, L. Co-author(s): Ritsch, H.; Genes, C.: Protected state enhanced quantum metrology.
      Gemeinsame Jahrestagung von ÖPG, SPG, ÖGAA und SGAA / Joint Annual Meeting of the Austrian Physical Society and Swiss Physical Society, Linz, 2013-09-04. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Zoubi, H.; Ritsch, H.: Superradiance and Cascaded Decay.
      Young Atom Opticians Conference (YAO 2013), Birmingham, 2013-04-10. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Zoubi, H.; Ritsch, H.: Superradiance and Cascaded Decay.
      19th SFB-FoQuS Meeting, Innsbruck, 2013-02-28.

    • Lecturer(s): Sandner, R. Co-author(s): Niedenzu, W.; Ritsch, H.: Subrecoil cavity cooling towards degeneracy: a numerical study.
      Long-range interactions in the ultracold, Stuttgart, 2013-09-04. (Web link)

    • Lecturer(s): Sandner, R. Co-author(s): Niedenzu, W.; Ritsch, H.: Subrecoil cavity cooling down to degeneracy: a numerical study.
      CCQED YES meeting, Zürich, 2013-06-04. (Web link)

    • Lecturer(s): Sonnleitner, M. Co-author(s): Ritsch-Marte, M.; Ritsch, H.: Attractive optical forces from black-body radiation.
      21st International Conference on Laser Spectroscopy (ICOLS 2013), Berkeley, 2013-06-10. (Web link)

    Guest Lectures

    Guest Lecture
    • Lecturer(s): Ritsch, H.: Quantum Optics with ultracold quantum gases: towards the full quantum regime of the light–matter interaction.
      Universität Hamburg, Hamburg, 2013-01-23. (Web link)



    Publications 2012

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Griesser, T.; Niedenzu, W.; Ritsch, H. (2012): Cooperative self-organization and sympathetic cooling of a multispecies gas in a cavity.
      In: New Journal of Physics 14, p. 053031. (DOI) (Web link)

    • Niedenzu, W.; Sandner, R.; Genes, C.; Ritsch, H. (2012): Quantum-correlated motion and heralded entanglement of distant optomechanically coupled objects.
      In: Journal Of Physics B: Atomic Molecular And Optical Physics 45/24, p. 245501. (DOI) (Web link)

    • Sandner, K.; Ritsch, H. (2012): Temperature Gradient Driven Lasing and Stimulated Cooling.
      In: Physical Review Letters 109/19, p. 193601. (DOI) (Web link)

    • Sandner, K.; Ritsch, H.; Amsuess, R.; Koller, C.; Noebauer, T.; Putz, S.; Schmiedmayer, J.; Majer, J. (2012): Strong magnetic coupling of an inhomogeneous nitrogen-vacancy ensemble to a cavity.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 85/5, p. 053806. (DOI) (Web link)

    • Sonnleitner, M.; Ritsch-Marte, M.; Ritsch, H. (2012): Optomechanical deformation and strain in elastic dielectrics.
      In: New Journal of Physics 14, p. 103011. (DOI) (Web link)

    Journal Article (Review)
    • Mekhov, I.; Ritsch, H. (2012): Quantum optics with ultracold quantum gases: towards the full quantum regime of the light–matter interaction.
      In: Journal Of Physics B: Atomic Molecular And Optical Physics 45/10, p. 102001. (DOI) (Web link)

    Proceedings Article (Full Paper)
    • Sonnleitner, M.; Ritsch-Marte, M.; Ritsch, H. (2012): Self-consistent optomechanical trapping, strain and deformation of elastic dielectrics.
      In: Dholakia, K; Spalding, G.C. (Editors): Proceedings of Spie: Optical Trapping and Optical Micromanipulation IX. Washington: SPIE (= Proceedings of SPIE, 8458), p. 8458-128. (Web link)



    Lectures 2012

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Self-consistent optomechanical trapping, strain, and deformation of elastic dielectrica.
      Optical Trapping and Optical Micromanipulation IX, San Diego, 2012-08-16. (Web link)

    • Lecturer(s): Ritsch, H.: From Cavity QED with quantum gases to optomechanics: Cavity ground state cooling and optomechanics with an ultracold quantum gas.
      Workshop “Optomechanics on the Hudson”, New York, 2012-04-02. (Web link)

    Poster Presentation
    • Lecturer(s): Griesser, T. Co-author(s): Niedenzu, W.; Ritsch, H.: Quantum Kinetic Theory of Polarizable Particles in a Cavity.
      International Conference on Quantum Optics 2012, Obergurgl, 2012-02-16. (Web link)

    • Lecturer(s): Kraemer, S. Co-author(s): Ritsch, H.; Vukics, A.: Monte Carlo wave function simulations in nonlinear quantum optics using an adaptive coherent state basis.
      Summer School within the framework of ICAP 2012, Paris, 2012-07-16. (Web link)

    • Lecturer(s): Krämer, S. Co-author(s): Ritsch, H.: Efficient wave function simulations in nonlinear quantum optics using an adaptive coherent state basis.
      Fifth International Workshop on Theoretical and Computational Nano-Photonics: TaCoNa-Photonics 2012, Bad Honnef, 2012-10-24. (Web link)

    • Lecturer(s): Krämer, S. Co-author(s): Ritsch, H.: Efficient wave function simulations in nonlinear quantum optics using an adaptive coherent state basis.
      62. Jahrestagung der Österreichischen Physikalischen Gesellschaft, Graz, 2012-09-19. (Web link)

    • Lecturer(s): Niedenzu, W. Co-author(s): Sandner, R.; Ritsch, H.: Entanglement and momentum correlations in a ring resonator.
      International Conference on Quantum Optics 2012, Obergurgl, 2012-02-16. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Zoubi, H.; Ritsch, H.: Superradiance and Cascaded Decay.
      Quantum Assisted Sensing And Readout (QuASAR)/Optical Radiation Cooling and Heating in Integrated Devices (ORCHID) Program Review, Santa Barbara, 2012-08-29. (Web link)

    • Lecturer(s): Ostermann, L. Co-author(s): Zoubi, H.; Ritsch, H.: Superradiance and Cascaded Decay.
      Summer School within the framework of ICAP 2012, Paris, 2012-07-16. (Web link)

    • Lecturer(s): Sandner, K. Co-author(s): Amsüss, R.; Majer, J.; Schmiedmayer, J.; Ritsch, H.: Strong coupling of an inhomogeneous spin ensemble to a cavity.
      CCQED Winter School: Introduction to circuit and cavity QED, Les Houches, 2012-02-28. (Web link)

    • Lecturer(s): Sandner, R. Co-author(s): Niedenzu, W.; Genes, C.; Vukics, A.; Ritsch, H.: C++ quantum simulations of cavity sub-recoil cooling.
      NI Summer School 2012, Munich, 2012-09-11. (Web link)

    • Lecturer(s): Sandner, R. Co-author(s): Niedenzu, W.; Kraemer, S.; Vukics, A.; Ritsch, H.: C++QED: a framework for simulating open quantum dynamics.
      CCQED Winter School: Introduction to circuit and cavity QED, Les Houches, 2012-02-28. (Web link)

    • Lecturer(s): Sonnleitner, M. Co-author(s): Ritsch-Marte, M.; Ritsch, H.: Lightforces and deformation in an elastic object.
      International Conference on Quantum Optics 2012, Obergurgl, 2012-02-16. (Web link)

    Guest Lectures

    Guest Lecture
    • Lecturer(s): Ritsch, H.: Quantum optics with ultracold quantum gases.
      Universität Ulm, Ulm, 2012-10-19. (Web link)



    Publications 2011

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Amsüss, R.; Koller, C.; Nöbauer, T.; Putz, S.; Rotter, S.; Sandner, K.; Schneider, S.; Schramböck, M.; Steinhauser, G.; Ritsch, H.; Schmiedmayer, J.; Majer J. (2011): Cavity QED with Magnetically Coupled Collective Spin States.
      In: Physical Review Letters 107/6, p. 060502. (DOI)

    • Genes, C.; Ritsch, H.; Drewsen, M.; Dantan, A. (2011): Atom-membrane cooling and entanglement using cavity electromagnetically induced transparency.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 84/5, p. 051801(R). (DOI)

    • Griesser, T.; Ritsch, H. (2011): Nonlinear atom-field dynamics in high-Q cavities: from a BEC to a thermal gas.
      In: Optics Express 19/12, pp. 11242 - 11255. (DOI) (Web link)

    • Mekhov, I.; Ritsch, H. (2011): Atom state evolution and collapse in ultracold gases during light scattering into a cavity.
      In: Laser Physics 21/8, pp. 1486 - 1490. (DOI)

    • Niedenzu, W.; Griesser, T.; Ritsch, H. (2011): Kinetic theory of cavity cooling and selforganisation of a cold gas.
      In: Europhysics Letters 96/4, p. 43001.

    • Sonnleitner, M.; Ritsch-Marte, M.; Ritsch, H. (2011): Optical forces, trapping and strain on extended dielectric objects.
      In: Europhysics Letters 94/3, pp. 34005-1 - 34005-7. (Web link)

    • Zoubi, H.; Ritsch, H. (2011): Collective electronic excitation coupling between planar optical lattices using Ewald's method.
      In: Journal Of Physics B: Atomic Molecular And Optical Physics 44/20, p. 205303. (DOI)

    • Zoubi, H.; Ritsch, H. (2011): Lifetime and emission characteristics of collective electronic excitations in two-dimensional optical lattices.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 83/6, p. 063831. (DOI)

    Other Publications

    Electronic Publication, Scientific
    • Zoubi, H.; Ritsch, H. (2011): Optical Properties of Collective Excitations for Finite Chains of Trapped Atoms. (Web link)



    Lectures 2011

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Quantum Optics with ultracold gases.
      Workshop ECOQAS 2011 "Engineering and Control of Quantum Systems", Dresden, 2011-10-14. (Web link)

    Conference Lecture (Upon Registration)
    • Lecturer(s): Ritsch, Helmut: Quantum optics with cold quantum gases.
      Frontiers of Matter Wave Optics (FOMO 2011), Obergurgl, 2011-03-23. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Niedenzu, W. Co-author(s): Griesser, T.; Ritsch, H.: Poster: "Kinetic theory of cavity cooling and selforganisation of a cold gas".
      11th SFB-Meeting, Wien, 2011-05-20. (Web link)

    Poster Presentation
    • Lecturer(s): Griesser, T. Co-author(s): Niedenzu, W.; Ritsch, H.: Multispecies kinetic theory of cavity-mediated cooling and selforganisation.
      Frontiers of Matter Wave Optics (FOMO 2011), Obergurgl, 2011-03-22. (Web link)

    • Lecturer(s): Niedenzu, W. Co-author(s): Griesser, T.; Ritsch, H.: Kinetic theory of cavity cooling and selforganisation of a cold gas.
      Workshop ECOQAS 2011 "Engineering and Control of Quantum Systems", Dresden, 2011-10-10. (Web link)

    • Lecturer(s): Niedenzu, W. Co-author(s): Schulze, R.; Vukics, A.; Ritsch, H.: Microscopic dynamics of ultracold particles in a ring-cavity optical lattice.
      Frontiers of Matter Wave Optics (FOMO 2011), Obergurgl, 2011-03-22. (Web link)

    • Lecturer(s): Ritsch, H. Co-author(s): Griesser, T.; Niedenzu, W.: Selforganization and sympathetic cooling of multispecies ensembles in a cavity.
      Bose-Einstein Condensation 11 (BEC 2011): Frontiers in Quantum Gases, Sant Feliu de Guixols, 2011-09-10. (Web link)

    • Lecturer(s): Ritsch, H. Co-author(s): Griesser, T.; Niedenzu, W.: Multispecies kinetic theory of cavity-mediated cooling and selforganisation.
      20th International Conference on Laser Spectroscopy (ICOLS 2011), Hameln, 2011-05-30. (Web link)



    Publications 2010

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Griesser, T.; Ritsch, H.; Hemmerling, G.; Robb, R.M. (2010): A Vlasov approach to bunching and selfordering of particles in optical resonators.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 58, pp. 349 - 368. (DOI)

    • Mekhov, I.; Ritsch, H. (2010): Quantum optical measurements in ultracold gases: macroscopic Bose-Einstein condensates.
      In: Laser Physics 20/3, pp. 694 - 699.

    • Nimmrichter, S.; Hammerer, K.; Asenbaum, P.; Ritsch, H.; Arndt, M. (2010): Master equation for the motion of a polarizable particle in a multimode cavity.
      In: New Journal of Physics 12, p. 083003. (DOI)

    • Schulze, R.; Genes, C.; Ritsch, H. (2010): Optomechanical approach to cooling of small polarizable particles in a strongly pumped ring cavity.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 81, p. 063820. (Web link)

    • Zoubi, H.; Ritsch, H. (2010): Coupling of polaritons to vibrational modes of ultracold atoms in an optical lattice.
      In: PHYSICA E 42/3, pp. 416 - 419. (DOI)

    • Zoubi, H.; Ritsch, H. (2010): Hybrid quantum system of a nanofiber mode coupled to two chains of optically trapped atoms.
      In: New Journal of Physics 12, p. 103014. (DOI)

    • Zoubi, H.; Ritsch, H. (2010): Metastability and directional emission characteristics of excitons in 1D optical lattices.
      In: Europhysics Letters 90/2, p. 23001. (DOI) (Web link)



    Lectures 2010

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H. Co-author(s): Griesser, T.; Henschel, K.; Niedenzu, W.: Micro-mechanical oscillator ground state cooling via resonant intracavity optical gain or absorption.
      Hybrid Quantum Systems: New Perspectives on Quantum State Control (International Ruperto-Carola-Symposium), Heidelberg, 2010-05-14. (Web link)

    • Lecturer(s): Ritsch, H. Co-author(s): Griesser, T.; Niedenzu, W.: Cavity QED with ultracold quantum gases.
      22nd International Conference on Atomic Physics (ICAP 2010), Cairns, 2010-07-30. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Griesser, T. Co-author(s): Ritsch, H.: Poster "Kinetic Theory of Particles in Resonators".
      8th SFB-FoQuS Meeting, Innsbruck, 2010-07-08.

    • Lecturer(s): Henschel, K. Co-author(s): Majer, J.; Schmiedmayer, J.; Ritsch, H.: Poster "Spin ensembles on a chip: Collective effects in cavity QED".
      8th SFB-FoQuS Meeting, Innsbruck, 2010-07-08.

    • Lecturer(s): Niedenzu, W.; Schulze, R.; Vukics, A.; Ritsch, H.: Poster "Microscopic dynamics of ultracold particles in a ring-resonator-generated optical lattice".
      8th SFB-FoQuS Meeting, Innsbruck, 2010-07-08.

    • Lecturer(s): Ritsch, H. Co-author(s): Griesser, T.; Niedenzu, W.; Sonnleitner, M.: Optomechanics with molecules in a strongly pumped ring cavity.
      Final CMMC Meeting, Herrsching, 2010-03-29.

    • Lecturer(s): Sonnleitner, M. Co-author(s): Asboth, J.; Ritsch, H.: Poster "Optomechanics in Extended Objects".
      8th SFB-FoQuS Meeting, Innsbruck, 2010-07-08.

    • Lecturer(s): Zoubi, H. Co-author(s): Ritsch, H.: Poster "Quantum-Phases for Two-Components Bose-Hubbard Model within a Cavity QED".
      8th SFB-FoQuS Meeting, Innsbruck, 2010-07-08.

    Poster Presentation
    • Lecturer(s): Amsüss, R. Co-author(s): Haslinger, S.; Hufnagl, C.; Koller, C.; Lippok, N.; Schramböck, M.; Majer, J.; Schneider, S.; Schmiedmayer, J.; Henschel, K.; Zoubi, H.; Ritsch, H.: Hybrid Quantum Systems: Integrating Atomic and Solid-State Qubits.
      Quantum Optics Obergurgl Meeting 2010, Obergurgl, 2010-02-22.

    • Lecturer(s): Griesser, T. Co-author(s): Ritsch, H.: Kinetic Theory of Particles in Resonators.
      Quantum Optics Obergurgl Meeting 2010, Obergurgl, 2010-02-22.

    • Lecturer(s): Niedenzu, W. Co-author(s): Ritsch, H.: Dynamics of ultracold atoms in a ring-cavity generated optical lattice.
      Quantum Optics Obergurgl Meeting 2010, Obergurgl, 2010-02-22.

    • Lecturer(s): Sonnleitner, M. Co-author(s): Asboth, J.; Ritsch, H.: Optomechanics in Extended Objects.
      Trends in Optical Micromanipulation II, Obergurgl, 2010-04-12. (Web link)

    • Lecturer(s): Zoubi, H. Co-author(s): Ritsch, H.: Quantum-Phases for Two-Components Bose-Hubbard Model within a Cavity QED.
      The NewSpin, Utrecht 2010 conference on "Spin manipulation in cold atoms and condensed matter", Utrecht, 2010-01-07. (Web link)



    Publications 2009

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Genes, C.; Ritsch, H.; Vitali, D. (2009): Micromechanical oscillator ground-state cooling via resonant intracavity optical gain or absorption.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 80/6, p. 061803.

    • Jack, B.; Leach, J.; Ritsch, H.; Barnett, S. M.; Padgett, M. J.; Franke-Arnold, S. (2009): Precise quantum tomography of photon pairs with entangled orbital angular momentum.
      In: New Journal of Physics 11, p. 103024.

    • Mark, M. J.; Danzl, J. G.; Haller, E.; Gustavsson, M.; Bouloufa, N.; Dulieu, O.; Salami, H.; Bergeman, T.; Ritsch, H.; Hart, R.; Nägerl, H.-C. (2009): Dark resonances for ground state transfer of molecular quantum gases.
      In: Applied Physics B: Lasers and Optics 95, pp. 219 - 225. (DOI)

    • Mekhov, I. B.; Ritsch, H. (2009): QND measurements and state preparation in quantum gases by light detection.
      In: Physical Review Letters 102, p. 020403. (DOI)

    • Mekhov, I. B.; Ritsch, H. (2009): Quantum optics with quantum gases.
      In: Laser Physics 19, pp. 610 - 615.

    • Mekhov, I. B.; Ritsch, H. (2009): Quantum optics with quantum gases: controlled state reduction by designed light scattering.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 80, p. 013604. (DOI)

    • Nagy, D.; Domokos, P.; Vukics, A.; Ritsch, H. (2009): Nonlinear quantum dynamics of two BEC modes dispersively coupled by an optical cavity.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 55/3, pp. 659 - 668.

    • Ritsch, H. (2009): Quantum optics: Crystals of atoms and light.
      In: Nature Physics 5, pp. 781 - 782. (Web link)

    • Russo, Carlos; Barros, Helena; Stute, Andreas; Dubin, Francois; Philips, Eoin S.; Monz, Thomas; Northup, Tracy; Becher, Christoph; Salzburger, Thomas; Ritsch, Helmut; Schmidt, Piet Oliver; Blatt, Rainer (2009): Raman spectroscopy of a single ion coupled to a high-finesse cavity.
      In: Applied Physics B: Lasers and Optics 95, pp. 205 - 212. (DOI)

    • Salzburger, T.; Ritsch, H. (2009): Collective transverse cavity cooling of a dense molecular beam.
      In: New Journal of Physics 11, p. 055025. (Web link)

    • Verdú, J.; Zoubi, H.; Koller, C.; Majer, J.; Ritsch, H.; Schmiedmayer, J. (2009): Strong Magnetic Coupling of an Ultracold Gas to a Superconducting Waveguide Cavity.
      In: Physical Review Letters 103, p. 043603. (DOI)

    • Vukics, A.; Niedenzu, W.; Ritsch, H. (2009): Cavity nonlinear optics with few photons and ultracold quantum particles.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 79, p. 013828. (DOI)

    • Zoubi, H.; Ritsch, H. (2009): Coupling of Electronic and Motional Dynamics in a Cold Atom Optical Lattice.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 79, p. 023411. (DOI)

    • Zoubi, H.; Ritsch, H. (2009): Polarization mixing in optical lattices with uniaxial anisotropy.
      In: Journal Of Physics B: Atomic Molecular And Optical Physics 42/1, p. 015501.

    • Zoubi, H.; Ritsch, H. (2009): Quantum phases of bosonic atoms with two levels coupled by a cavity field in an optical lattice.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 80/5, p. 053608.

    • Zoubi, H.; Ritsch, H. (2009): Superradiant and dark exciton states in an optical lattice within a cavity.
      In: Europhysics Letters 87, p. 23001.

    Journal Article (Proceedings Paper)
    • Danzl, Johann; Mark, M. J.; Haller, E.; Gustavsson, M.; Bouloufa, N.; Dulieu, O.; Ritsch, H.; Hart, R.; Nägerl, H.-C. (2009): Precision molecular spectroscopy for ground state transfer of molecular quantum gases.
      In: Faraday Discussions 142, pp. 283 - 295. (Web link)



    Lectures 2009

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Concurrent stimulated amplification of light and matter waves to build an atom-photon pair laser.
      18th International Laser Physics Workshop LPHYS'09, Barcelona, 2009-07-16. (Web link)

    • Lecturer(s): Ritsch, H.: Few Photon Nonlinear Optics using ultracold Particles in a Cavity.
      8th EUROPEAN CONFERENCE ON NON LINEAR SPECTROSCOPY AND 28th EUROPEAN CARS WORKSHOP, Rom, 2009-05-26.

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Amsuss, R. Co-author(s): Lippok, N.; Koller, C.; Haslinger, S.; Verdu, J.; Schneider, S.; Majer, J.; Schmiedmayer, J.; Zoubi, H.; Ritsch, H.: Poster: Hybrid Quantum Systems: Magnetic Strong Coupling of Ultracold Atoms to Superconducting Microwave Resonators.
      SFB Conference 2009, Innsbruck, 2009-01-29.

    • Lecturer(s): Griesser, T.; Ritsch, H.: Poster: Vlasov approach to particle dynamics in resonators.
      SFB Meeting, Wien, 2009-04-23.

    • Lecturer(s): Niedenzu, W.; Vukics, A.; Ritsch, H.: Poster: Cavity nonlinear optics with few photons and ultracold quantum particles.
      SFB Conference 2009, Innsbruck, 2009-01-29.

    • Lecturer(s): Ritsch, H.: Atoms in quantized optical potentials.
      SFB Conference 2009, Innsbruck, 2009-01-29.

    Poster Presentation
    • Lecturer(s): Griesser, T.; Ritsch, H.: Vlasov approach to particle dynamics in resonators.
      Joint Annual Meeting of the Austrian Physical Society (ÖPG), Swiss Physical Society (SPS) and Austrian Society of Astronomy and Astrophysics (ÖGAA), Innsbruck, 2009-09-02. (Web link)

    • Lecturer(s): Griesser, T.; Ritsch, H.: Vlasov approach to particle dynamics in resonators.
      CMMC Workshop on "Cavity Cooling of Atoms, Molecules and Ions", Obergurgl, 2009-02-05. (Web link)

    • Lecturer(s): Haslinger, S.; Amsüss, R.; Koller, C.; Lippok, N.; Majer, J.; Schneider, S.; Zoubi, H.; Verdu, J.; Ritsch, H.; Schmiedmayer, J.: Hybrid Quantum Systems: Integrating Atomic and Solid-State Qubits.
      Joint Annual Meeting of the Austrian Physical Society (ÖPG), Swiss Physical Society (SPS) and Austrian Society of Astronomy and Astrophysics (ÖGAA), Innsbruck, 2009-09-02.

    • Lecturer(s): Henschel, K.; Majer, J.; Schmiedmayer, J.; Ritsch, H.: Cavity QED with an ultracold ensemble on a chip: Strong magnetic coupling between a collective spin state and a microwave cavity.
      Joint Annual Meeting of the Austrian Physical Society (ÖPG), Swiss Physical Society (SPS) and Austrian Society of Astronomy and Astrophysics (ÖGAA), Innsbruck, 2009-09-02.

    • Lecturer(s): Niedenzu, W.; Vukics, A.; Ritsch, H.: Cavity nonlinear optics with few photons and ultracold quantum particles.
      Joint Annual Meeting of the Austrian Physical Society (ÖPG), Swiss Physical Society (SPS) and Austrian Society of Astronomy and Astrophysics (ÖGAA), Innsbruck, 2009-09-02.

    • Lecturer(s): Niedenzu, W.; Vukics, A.; Ritsch, H.: Cavity nonlinear optics with few photons and ultracold quantum particles.
      CMMC Workshop on "Cavity Cooling of Atoms, Molecules and Ions", Obergurgl, 2009-02-05.

    • Lecturer(s): Ritsch, H.; Vukics, A.; Niedenzu, W.: Few Photon Nonlinear Optics using ultracold Particles in a Cavity.
      8th EUROPEAN CONFERENCE ON NON LINEAR SPECTROSCOPY AND 28th EUROPEAN CARS WORKSHOP, Rom, 2009-05-26.

    • Lecturer(s): Schulze, R.; Niedenzu, W.; Ritsch, H.: Cold atoms in optical lattices generated by a high-Q ring cavity.
      Young Atom Opticians Conference (YAO 2009), Wien, 2009-02-18.

    • Lecturer(s): Zoubi, H.; Ritsch, H.: Polarization-mixing as a signature for the formation of molecules in an optical lattice.
      Faraday Discussion 142: Cold and Ultracold Molecules, Durham, 2009-04-16.



    Publications 2008

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Asboth, J.; Ritsch, H.; Domokos, P. (2008): Optomechanical coupling in a one-dimensional optical lattice.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 77, p. 063424. (DOI)

    • Deachapunya, S.; Fagan, P.J.; Major, A. G.; Reiger, E.; Ritsch, H.; Stefanov, A.; Ulbricht, H.; Arndt, M. (2008): Slow beams of massive molecules.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 46, pp. 307 - 313. (DOI) (Web link)

    • Lev, B.; Vukics, A.; Hudson, E. R.; Sawyer, B. C.; Domokos, P.; Ritsch, H.; Ye, J. (2008): Prospects for the cavity-assisted laser cooling of molecules.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 77, p. 023402. (DOI)

    • Maschler, C.; Mekhov, I.; Ritsch, H. (2008): Ultracold atoms in optical lattices generated by quantized light fields.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 46/3, pp. 545 - 560. (Web link)

    • Zoubi, H.; Ritsch, H. (2008): Bright and dark excitons in an atom-pair–filled optical lattice within a cavity.
      In: Europhysics Letters 82, p. 14001. (Web link)

    • Zoubi, H.; Ritsch, H. (2008): Exciton–polariton scattering as signature of defects in cold atom optical lattices.
      In: New Journal of Physics 10, p. 23001. (Web link)

    Journal Article (Proceedings Paper)
    • Zoubi, H.; Ritsch, H. (2008): Excitons and polaritons in an optical lattice for cold-atoms within a cavity.
      In: Series on Advances in Quantum Many-Body Theory 11, pp. 346 - 350.

    Other Publications

    Electronic Publication, Scientific
    • Mekhov, I.; Ritsch, H. (2008): QND measurements and state preparation in quantum gases by light detection. (Web link)

    • Vukics, A.; Niedenzu, W.; Ritsch, H. (2008): Cavity nonlinear optics with few photons and ultracold quantum particles. (Web link)

    • Zoubi, H.; Ritsch, H. (2008): Coupling of Electronic and Motional Dynamics in a Cold Atom Optical Lattice. (Web link)

    • Zoubi, H.; Ritsch, H. (2008): Polarization Mixing in Optical Lattices with Uniaxial Anisotropy. (Web link)



    Lectures 2008

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Selfconsistent Collective Dynamics and Stability of an Optically Bound Chain.
      23rd Progress In Electromagnetics Research Symposium (PIERS 2008), Hangzhou, 2008-03-26. (Web link)

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Ritsch, Helmut: Cavity QED with quantum gases.
      MIDAS Kick-Off meeting, Wien, 2008-06-02. (Web link)

    Poster Presentation
    • Lecturer(s): Griesser, T.; Ritsch, H.: Vlasov approach to particle dynamics in resonators.
      EuroQUAM Inauguration Conference, Barcelona, 2008-04-08.

    • Lecturer(s): Mekhov, I.; Ritsch, H.: Quantum optics with quantum gases in optical lattices.
      Workshop on Quantum Phenomena and Information: From Atomic to Mesoscopic Systems, Trieste, 2008-05-08. (Web link)

    • Lecturer(s): Mekhov, I.; Ritsch, H.: QND measurements in quantum gases using cavity QED.
      Interf08: Coherence, Squeezing and Entanglement for Precision Measurements with Quantum Gases, Trient, 2008-04-04. (Web link)

    • Lecturer(s): Niedenzu, W.; Vukics, A.; Ritsch, H.: Cavity nonlinear optics with few photons and ultracold quantum particles.
      Summer School on Cold Atoms in Optical Lattices, Oxford, 2008-09-23.

    • Lecturer(s): Verdu, J.; Zoubi, H.; Koller, C.; Ritsch, H.; Schmiedmayer, J.: Magnetic Strong Coupling of a BEC to a Planar Microwave Resonator.
      ESF-FWF-LFIU Conference on Quantum Optics: From Photons and Atoms to Molecules and Solid State Systems, Obergurgl, 2008-02-26. (Web link)

    • Lecturer(s): Zoubi, H.; Ritsch, H.: Collective Electronic Excitations for Optical Lattice Cold Atoms within a Cavity.
      Frontiers of Quantum and Mesoscopic Thermodynamics, Prag, 2008-07-29.

    • Lecturer(s): Zoubi, H.; Ritsch, H.: Excitons and cavity polaritons for ultracold atoms in an optical lattice.
      The 25th Jerusalem Winter School in Theoretical Physics, Jerusalem, 2008-01-04.



    Publications 2007

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Asboth, J.K.; Ritsch, H.; Domokos, P. (2007): Collective Excitations and Instability of an Optical Lattice due to Unbalanced Pumping.
      In: Physical Review Letters 98, p. 203008. (DOI) (Web link)

    • Maes, C.; Asboth, J. K.; Ritsch, H. (2007): Self ordering threshold and superradiant backscattering to slow a fast gas beam in a ring cavity with counter propagating pump.
      In: Optics Express 15/10, pp. 6019 - 6035. (Web link)

    • Maschler, Ch.; Ritsch, H.; Vukics, A.; Domokos, P. (2007): Entanglement assisted fast reordering of atoms in an optical lattice within a cavity at T = 0.
      In: Optics Communications 273/2, pp. 446 - 450. (DOI) (Web link)

    • Mekhov, I.; Maschler, Ch.; Ritsch, H. (2007): Cavity-Enhanced Light Scattering in Optical Lattices to Probe Atomic Quantum Statistics.
      In: Physical Review Letters 98, p. 100402. (DOI) (Web link)

    • Mekhov, I.; Maschler, Ch.; Ritsch, H. (2007): Light scattering from ultracold atoms in optical lattices as an optical probe of quantum statistics.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 76/5, p. 053618. (DOI) (Web link)

    • Mekhov, I.; Maschler, Ch.; Ritsch, H. (2007): Probing quantum phases of ultracold atoms in optical lattices by transmission spectra in cavity QED.
      In: Nature Physics 3, pp. 319 - 323. (DOI) (Web link)

    • Salzburger, T.; Ritsch, H. (2007): Atom-photon pair laser.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 75/6, p. 061601. (DOI) (Web link)

    • Vukics, A.; Maschler, Ch.; Ritsch, H. (2007): Microscopic physics of quantum self-organization of optical lattices in cavities.
      In: New Journal of Physics 9, p. 255. (DOI) (Web link)

    • Vukics, A.; Ritsch, H. (2007): C++QED: an object-oriented framework for wave-function simulations of cavity QED systems.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 44/3, pp. 585 - 599. (DOI) (Web link)

    • Zoubi, H.; Ritsch, H. (2007): Excitons and cavity polaritons for ultracold atoms in an optical lattice.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 76/1, p. 013817. (DOI) (Web link)



    Lectures 2007

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, H.: Classical versus quantum aspects of selfordering of cold atoms in optical lattices.
      Workshop "Self-assembling of Particles into Longitudinal and Transverse Structures", Porquerolles, 2007-10-10.

    • Lecturer(s): Ritsch, H.: Cavity cooling and self-organization of degenerate quantum gases.
      Safed Workshop on Cooling and Thermodynamics on Quantum Systems, Zfat (Safed), 2007-08-27.

    Lecture at Project Meeting / Research Cooperation Meeting
    • Lecturer(s): Mekhov, I.; Maschler, Ch.; Ritsch, H.: Poster "Quantum optics with ultracold degenerate gases in optical lattices".
      SFB Meeting, Innsbruck, 2007-05-03.

    • Lecturer(s): Niedenzu, W.; Maschler, Ch.; Ritsch, H.: Poster "Two band model for atoms in an optical lattice generated by a cavity field".
      SFB Meeting, Innsbruck, 2007-05-03.

    Poster Presentation
    • Lecturer(s): Asboth, J.; Ritsch, H.: Dynamical instability of an optically bound system due to unbalanced pumping.
      ESF Research Conference on Trends in Optical Micromanipulation, Obergurgl, 2007-02-05.

    • Lecturer(s): Maschler, Ch.; Ritsch, H.; Vukics, A.: Entanglement driven self-organization via a quantum seesaw mechanism.
      QUROPE Winter School on Quantum Information: Ensemble based Quantum Information Processing, Obergurgl, 2007-02-20.

    • Lecturer(s): Mekhov, I.; Maschler, Ch.; Ritsch, H.: Cavity QED with ultracold gases: Probing and Manipulating Quantum States of Atoms in Optical Lattices by Light Scattering.
      Ninth Rochester Conf. on Coherence and Quantum Optics / Int. Conf. on Quantum Information CQO9/ICQO, Rochester, 2007-06-12. (Web link)

    • Lecturer(s): Mekhov, I.; Maschler, Ch.; Ritsch, H.: Quantum optics with ultracold degenerate gases in optical lattices.
      International Seminar and Workshop on Nonlinear Physics in Periodic Structures and Metamaterials (NPPSM07), Dresden, 2007-03-27. (Web link)

    • Lecturer(s): Niedenzu, W.; Vukics, A.; Maschler, Ch.; Ritsch, H.: A multiband model for atoms in an optical lattice generated by a cavity field.
      First European Young Scientists Conference on Quantum Information - EYSCQI, Wien, 2007-08-28.

    • Lecturer(s): Ritsch, H.; Salzburger, T.: Atom-photon pair laser.
      18th International Conference on Laser Spectroscopy (ICOLS 07), Telluride, 2007-06-25. (Web link)

    • Lecturer(s): Vukics, A.; Maschler, Ch.; Ritsch, H.: Microscopic physics of quantum self-organisation of optical lattices in cavities.
      Recent progress in the studies of quantum gases, Paris, 2007-06-28.

    • Lecturer(s): Vukics, A.; Maschler, Ch.; Ritsch, H.: Microscopic physics of quantum self-organisation of optical lattices in cavities.
      Vienna Symposium on the Foundations of Modern Physics, Wien, 2007-06-08.

    • Lecturer(s): Zoubi, H.; Ritsch, H.: Excitons and Cavity Polaritons in Optical-Lattice Ultracold-atoms.
      Gordon Research Conference on Quantum Control of Light and Matter, Newport, 2007-08-15.

    • Lecturer(s): Zoubi, H.; Ritsch, H.: Excitons and Cavity Polaritons for.
      14th meeting of the series International Conference on Recent Progress in Many Body Theories - RPMBT14, Barcelona, 2007-07-18. (Web link)

    Guest Lectures

    Guest Lecture
    • Lecturer(s): Ritsch, Helmut: Atoms in quantum optical potentials.
      ETH Zürich, Zürich, 2007-12-17.

    • Lecturer(s): Ritsch, Helmut: Cavity generated optical lattices.
      University of Colorado - Joint Institute for Laboratory Astrophysics (JILA), Boulder, 2007-07-26.

    • Lecturer(s): Ritsch, Helmut: Ultracold gases in optical resonators.
      Optical Science Center, Tucson, 2007-07-19.



    Publications 2006

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Nagy, D.; Asboth, J.; Domokos, P.; Ritsch, H. (2006): Self-organization of a laser-driven cold gas in a ring cavity.
      In: Europhysics Letters 74, pp. 254 - 260. (DOI)

    • Salzburger, T.; Ritsch, H. (2006): Lasing and cooling in a finite-temperature cavity.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 74/3, p. 033806.



    Lectures 2006

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Slowing and cooling of a gaseous beam in a ring cavity with counter propagating pump.
      379th WE-Heraeus-Seminar on Cold Molecules, Bad Honnef, 2006-10-30.

    • Lecturer(s): Ritsch, Helmut: Cooling in a hot cavity.
      15th International Laser Physics Workshop (LPHYS'06), Lausanne, 2006-07-25.

    Poster Presentation
    • Lecturer(s): Maschler, C.; Ritsch, H.: Entanglement driven self-organization via a quantum seesaw mechanism.
      20th International Conference on Atomic Physics (ICAP 2006), Innsbruck, 2006-07-21.

    • Lecturer(s): Mekhov, Igor; Maschler, Christoph; Ritsch, Helmut: Light scattering from ultracold atoms in an optical lattice: nondestructive probe of quantum state of matter.
      377th WE-Heraeus-Seminar "Strong Coupling of Light and Matter", Bad Honnef, 2006-09-15.

    • Lecturer(s): Mekhov, Igor; Maschler, Christoph; Ritsch, Helmut: Light scattering from atoms in an optical lattice: optical probe of quantum statistics.
      20th International Conference on Atomic Physics (ICAP 2006), Innsbruck, 2006-07-18.

    • Lecturer(s): Russo, C.; Salzburger, T.; Phillips, E. S.; Barros, H. G.; Moz, T.; Stute, A.; Ritsch, H.; Becher, C.; Schmidt, P. O.; Blatt, R.: Towards a single-ion laser.
      20th International Conference on Atomic Physics (ICAP 2006), Innsbruck, 2006-07-16.



    Publications 2005

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Asboth, J.K.; Calsamiglia, J.; Ritsch, H. (2005): Computable Measure of Nonclassicality for Light.
      In: Physical Review Letters 94, p. 173602. (DOI)

    • Asboth, J.K.; Domokos, P.; Ritsch, H.; Vukics, A. (2005): Self-organization of atoms in a cavity field. Threshold, bistability, and scaling laws.
      In: Physical Review Letters 72/5, p. 53417. (DOI)

    • Maschler, C.; Ritsch, H. (2005): Cold Atom Dynamics in a Quantum Optical Lattice Potential.
      In: Physical Review Letters 95/21, p. 260401. (DOI)

    • Salzburger, T.; Domokos, P.; Ritsch, H. (2005): Theory of a single-atom laser including light forces.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 72/3, p. 33805. (DOI)

    • Winkler, Klaus; Thalhammer, Gregor; Theis, Matthias; Ritsch, Helmut; Grimm, Rudolf; Hecker Denschlag, Johannes (2005): Atom-molecule dark states in a Bose-Einstein condensate.
      In: Physical Review Letters 95/6, p. 063202. (Web link)



    Lectures 2005

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Tailoring interactions of trapped atoms in high Q cavities.
      ICONO/LAT 2005, St. Petersburg, 2005-05-15.



    Publications 2004

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • Asboth, J.K; Domokos, P.; Ritsch, H. (2004): Correlated motion of two atoms trapped in a single-mode cavity field.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 70/1, p. 013414. (DOI)

    • Maschler, C.; Ritsch, H. (2004): Quantum motion of laser-driven atoms in a cavity field.
      In: Optics Communications 243/1-6, pp. 145 - 155. (DOI)

    • Ritsch, H.; Milburn, G.J.; Ralph, T.C. (2004): Deterministic generation of tailored-optical-coherent-state superpositions.
      In: Physical Review A (Atomic, Molecular and Optical Physics) 70/3-4, p. 33804. (DOI)

    • Salzburger, T.; Ritsch, H. (2004): Atomic Self-Trapping Induced by Single-Atom Lasing.
      In: Physical Review Letters 93, p. 063002. (DOI)

    • Zippilli, S.; Morigi, G.; Ritsch, H. (2004): Collective effects in the dynamics of driven atoms in a high-Q resonator.
      In: Advances In Atomic Molecular And Optical Physics 31/3, pp. 507 - 518. (DOI)

    • Zippilli, S.; Morigi, G.; Ritsch, H. (2004): Suppression of Bragg Scattering by Collective Interference of Spatially Ordered Atoms with a High-Q Cavity Mode.
      In: Physical Review Letters 93, p. 123002. (DOI)



    Lectures 2004

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Light forces in a single atom laser.
      Workshop on Microcavities in Quantum Optics (MIQOP 2004), Ringberg am Tegernsee, 2004-09-22.

    • Lecturer(s): Ritsch, Helmut: Cooling and trapping in a single atom laser.
      International Symposium on Modern Problems of Laser Physics IV (MPLP 2004), Novosibirsk, 2004-08-22.

    Lecture at Summer-/Winterschool
    • Lecturer(s): Ritsch, Helmut: Advanced school on field atom surface interactions.
      Summer-School "Advanced school on field atom surface interactions" - Ecole de Physique, Les Houches, 2004-05-03.

    Poster Presentation
    • Lecturer(s): Ritsch, Helmut; Salzburger, Thomas: Cooling and self-trapping effects in single- and two-atom lasers.
      Workshop on Microcavities in Quantum Optics (MIQOP 2004), Ringberg am Tegernsee, 2004-09-22.

    Guest Lectures

    Guest Lecture
    • Lecturer(s): Ritsch, Helmut: Collective atomic dynamics in optical resonators.
      Universität Hamburg, Hamburg, 2004-02-20.

    • Lecturer(s): Ritsch, Helmut: Mechanical Ligth effects in optical resonators.
      Technische Universität Kaiserslautern, Kaiserslautern, 2004-02-02.



    Lectures 2003

    Presentations at Conferences, Symposia, etc.

    Poster Presentation
    • Lecturer(s): Ritsch, Helmut; Salzburger, Thomas: Enhanced atom capturing in a high-Q cavity by help of several transverse modes.
      Quantum Optics Obergurgl meeting 2003, Obergurgl, 2003-02-25.

    Guest Lectures

    Guest Lecture
    • Lecturer(s): Ritsch, Helmut: Mechanical light effects in optical resonators.
      Max-Planck-Institut für Quantenoptik (MPQ), Garching b. München, 2003-09-20.

    • Lecturer(s): Ritsch, Helmut: Mechanical light effects in cavaties.
      Australian Institute of Physics, Brisbane, 2003-08-08.

    • Lecturer(s): Ritsch, Helmut: Mechanical light effects in cavities.
      Stanford University, Stanford, CA, 2003-01-20.



    Lectures 2002

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Cooling without spontaneous emmission in optical resonators.
      International Conference Focused on the Methodology of Extreme Cooling, Visby, 2002-06-09.



    Publications 2001

    Contributions to Books / Journals

    Journal Article (Original Paper)
    • FOLMAN, R.; SCHMIEDMAYER, J.; RITSCH, H.; VITALI, D. (2001): On The Observation Of Decoherence With A Movable Mirror.
      In: European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 13/1, pp. 93 - 107. (DOI)

    Journal Article (Proceedings Paper)
    • FOLMAN, R.; SCHMIEDMAYER, J.; RITSCH, H.; VITALI, D. (2001): On The Observation Of Decoherence With A Movable Mirror.
      In: Zeitschrift für Naturforschung. Section A: A Journal of Physical Sciences 56/1, pp. 140 - 144.



    Lectures 2001

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Scaling properties of optical cooling in cavities.
      MPQ Meeting 2001, Ringberg am Tegernsee, 2001-12-15.

    Poster Presentation
    • Lecturer(s): Ritsch, Helmut; Gangl, Markus: Cold atoms in optical resonators.
      Conference "Quantum Optics V", Zakopane, 2001-06-20.



    Lectures 2000

    Presentations at Conferences, Symposia, etc.

    Conference Lecture (Invited Lecture)
    • Lecturer(s): Ritsch, Helmut: Collective cooling of molecules in multimode resonators.
      Workshop on Prospects of Cold Molecules II, Schloss St. Martin, Graz, 2000-11-13.

    • Lecturer(s): Ritsch, Helmut: Collective cooling in multimode high-Q resonators without spontaneous emmission.
      9th International Workshop on Laser Physics (LPHYS 2000), Bordeaux, 2000-07-17.

    • Lecturer(s): Ritsch, Helmut: Atomic cooling and trapping in a high-Q resonators without spontaneous emmission.
      International Symposium on Modern Problems of Laser Physics III (MPLP 2000), Novosibirsk, 2000-07-02.

    • Lecturer(s): Ritsch, Helmut: Collective atomic cooling in a high-Q resonators without spontaneous emmission.
      Seminar on Fundamentals of Quantum Optics V, Kühtai, 2000-01-16.