AG Quantum Optics and Spectroscopy
Research News
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.
Debugging a quantum processor
Researchers at the University of Innsbruck, together with partners from Sydney and Waterloo, have presented a new diagnostic method for quantum computers. It makes errors in individual quantum bits visible during logical calculation and evaluates them. The new method was demonstrated on an ion trap quantum processor in Innsbruck. It can be used to identify critical error sources —a key to developing more robust, fault-tolerant quantum processors.
Noise-proof quantum sensors
Researchers at the University of Innsbruck have shown that quantum sensors can remain highly accurate even in extremely noisy conditions. It’s the first experimental realization of a powerful quantum sensing protocol, outperforming all comparable classical strategies—even under overwhelming noise.
Group News
Welcome Simone Repic
Welcome Simone! Simone is currently pursuing his Master's degree in Physics (Quantum Science and Technology curriculum) at the University of Trieste, where he also completed his Bachelor’s degree with a thesis about Quantum Key Distribution. He is now carrying out his Master's thesis within the QCosmo group with the goal of designing and building a component for the cryogenic experimental setup for quantum logic spectroscopy with trapped molecular ions.
Andrea Turci receives his Masters
Andrea Turci completed his Masters on the topic of Bayesian Inference for Molecular Quantum Logic Spectroscopy. Congratulations, Andrea!
Florian Kranzl receives his PhD
Florian Kranzl completed his PhD with the successful defense of his dissertation on Quantum simulations of the Heisenberg model with trapped ions. Congratulations, Florian!
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
Contact us
Quantum Optics and Spectroscopy
Institut für Experimentalphysik
Universität Innsbruck
Technikerstrasse 25/4
A-6020 Innsbruck, Austria





















