AG Quantum Optics and Spectroscopy
Research News
Quantum simulators get error bars
Researchers have developed a method for determining the accuracy of quantum simulations. The new method not only reconstructs the dynamics of a quantum system from experimental data, but can also quantify the uncertainty of the predictions derived from it. The verification method was demonstrated in Innsbruck, Austria, on an ion-trap quantum computer with up to 51 qubits.
Not all quantum measurements are created equal
Proving that one quantum measurement is more powerful than another has long been difficult. Physicists from Heinrich Heine University Düsseldorf, Lund University, and the University of Innsbruck have now developed and demonstrated a simple technique to certify that a certain class of measurements has properties that cannot be mimicked by simpler means.
Quantum computing without interruptions
Mid-circuit measurements are one of the biggest practical hurdles in quantum error correction on encoded qubits. Researchers in Innsbruck and Aachen have now proposed and experimentally demonstrated that a universal fault-tolerant quantum algorithm can be executed without such measurements.
Group News
Welcome Timo Höbenreich
Welcome Timo! Timo completed his Bachelor's degree in physics at the University of Innsbruck, where he wrote his Bachelor's thesis on the ultrafast production of degenerate gases under the supervision of
Francesca Ferlaino and Manfred Mark. He has now joined the QUDITS team for his Master's thesis, focusing on the co-trapping of Ca40 and Ca43+ in an existing trapped ion experiment.
Welcome back Andrea Turci
Welcome Andrea! Andrea completed his Bachelor's degree at the University of Bologna and his Master's degree at the University of Padua. He completed his Master's thesis at the University of Innsbruck with the QCosmo team, where he focused on Bayesian inference for molecular quantum logic spectroscopy. He has now joined the Distributed Quantum Systems team for his PhD, where he will work on the deployable ion-trap set-up with the goal of creating entanglement between distributed nodes with a link efficiency greater than one, as well as with solid-state memories.
Welcome Jonathan Volz
Welcome Jonathan! Jonathan completed his Bachelor's degree at the University of Bonn, where his thesis focused on tests of a gas amplification stage made of copper and Apical on a pixel chip. He has now joined the QCosmo group for his Master's thesis, where he will be working on a new setup for trapping molecular ions in a cryogenic environment.
Research Projects
2D Crystals
2D ion crystals for quantum simulation
Barium
Free space single ion-single photon interactions
Cryo Trap
Surface ion traps in cryogenic environment
Distributed Quantum Systems
Photon frequency conversion for ions
QCosmo
Quantum control of molecules
Quantum Information
Quantum computation with trapped ions
QUDITS
Computations in higher dimensional systems
Open Positions
We are currently looking for Bachelor students, Master students, Ph.D. students, and post-docs.
If you are interested in joining our group, do not hesitate to apply!
Ion Trapping in Innsbruck
Funding
Contact us
Quantum Optics and Spectroscopy
Institut für Experimentalphysik
Universität Innsbruck
Technikerstrasse 25/4
A-6020 Innsbruck, Austria