Research Visits Between Partners
2025
March 1 - May 31:
As part of the “Mobility Program – Outgoing Mobility for Doctoral Students,” funded by the Croatian Science Foundation, PhD student Marin Đujić (IoPZg) visited the research group of Tobias Donner at ETH Zurich to gain advanced training in experimental techniques in cavity quantum electrodynamics (cQED) with ultracold atoms.
April 3 - 4:
Ivor Krešić and Juraj Gajović (Master student) both from the Institute of Physics in Zagreb visited Giovanna Morigi's group at the Universität des Saarlandes. Experimental results related to the observation of a dip in fluorescence when many comb modes are coupled into the cavity were discussed. Possible theoretical models were proposed.
March 3 - 4:
Giovanna Morigi from the at the Universität des Saarlandes visited the research group of Tobias Donner at ETH Zurich to discuss the common project on the formation of metastable subradiant states in many-body cavity QED.
April 3 - 4 :
Ticijana Ban from the Institute of Physics in Zagreb visited Giovanna Morigi's group at the Universität des Saarlandes. Ban gave a presentation on the latest experimental results of the IoPZg group, which involve cold atoms in an optical resonator excited by an optical frequency comb in a longitudinal geometry. The discussion focused on modeling the experimental results and exploring new ideas related to the implementation of WP1.
February 5 - 6:
Gian Luca Giorgi from the University of the Balearic Islands (UIB) / Institute for Cross-Disciplinary Physics and Complex Systems (IFISC) in Palma de Mallorca visited Ticijana Ban's group at the Institute of Physics in Zagreb. He delivered a seminar titled "Theoretical Framework for Quantum Associative Memories." The visit also included a discussion on how to demonstrate associative memories using atoms in an optical resonator excited by an optical frequency comb.
2024
November 15:
Giovanna Morigi from the at the Universität des Saarlandes visited the research group of Tobias Donner at ETH Zurich to discuss the common project on the formation of metastable subradiant states in many-body cavity QED.
Conferences and Seminars
2025
May 7 - 10:
Giovanna Morigi (USAAR) gave a talk at the at the 16th KCIK-ICTQT Symposium on Quantum Information, titled "Searching a quantum graph with long-range hopping“.
March 28:
Ticijana Ban (IOPZg) gave a talk at a conference 50th conference of the Middle European Cooperation in Statistical Physics in Konstanz, titled "Dispersive interaction of an optical frequency comb with atoms in a cavity“.
April 28 :
Giovanna Morigi (USAAR) gave a Colloquium at MPIPKS Dresden on "Searches as (quantum) selforganized process".
January 10:
Tobias Donner (ETHZ) gave a talk at the conference Physics of Quantum Electronics (PQE) in Snowbird (US), titled "Synchronization in a quantum gas with cavity-mediated long-range interactions“.
January 9 - 10:
Tom Schmit (USAAR) gave a talk at the Workshop of the group of Igor Lesanovsky and Giovanna Morigi at Tübingen, titled "Quantum selforganization in optical cavities“.
2024
October 29 - November 1:
Giovanna Morigi (USAAR) gave an invited talk at conference New Perspectives in Many-body Physics with Quantum Optical Systemsat KITP in Santa Barbara titled “Search as a (quantum) selforganized process“.
September 10:
Tobias Donner (ETHZ) gave a seminar at the Max Planck Institute for the Physics of Complex Systems in Dresden (Germany), titled "Engineering of many-body states in a driven-dissipative cavity QED system“.
August 28:
Tobias Donner (ETHZ) gave a talk at a conference Collective Phenomena: From Out-of-Equilibrium Many-Body States to Bosonic Codes and Dynamical Gauge Fields in Konstanz, titled "Engineering of many-body states in a driven-dissipative cavity QED system“.
Publications
2025
Published
- M. Nairn, L. Giannelli, G. Morigi, S. Slama, B. Olmos, and S. B. Jäger: Spin-self-organization in an optical cavity facilitated by inhomogeneous broadening, Phys. Rev. Lett. 134, 083603 (2025); https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.083603 , https://arxiv.org/abs/2407.19706
- G. W. Harmon, G. Morigi, and S. B. Jäger: Dynamical phases of a Bose-Einstein condensate in a bad optical cavity at optomechanical resonance, Phys. Rev. A 111, 013518 (2025); https://link.aps.org/doi/10.1103/PhysRevA.111.013518 , https://arxiv.org/abs/2408.02478
- T. Zwettler, Z. Xue, G. Bolognini, T. Bühler, L. Hruby, A. Fabre, T. Donner, J.-P. Brantut: Simple, highly stable transfer cavity for laser stabilization based on a carbon-fiber reinforced polymer spacer, Rev. Sci. Instrum. 96, 023005 (2025); https://doi.org/10.1063/5.0246106 , https://arxiv.org/abs/2409.16065
- Zhao Zhang, Davide Dreon, Tilman Esslinger, Dieter Jaksch, Berislav Buca, Tobias Donner Dissipation-induced non-equilibrium phases with temporal and spatial order, in press at Communications Physics (2025); , https://https://arxiv.org/abs/2205.01461
Submitted
- Sayan Roy, Shamik Gupta, and Giovanna Morigi: Causality, localisation, and universality of monitored quantum walks with long-range hopping, https://arxiv.org/abs/2504.12053
- Emma C. King, Moritz Linnebacher, Peter P. Orth, Matteo Rizzi, and Giovanna Morigi: Optimal Spatial Searches with Long-Range Tunneling, https://arxiv.org/abs/2501.08148
- F. Anselmi, F. Benatti, G. D'Auria, and G. Morigi: Inverse design of Ancillary System for Quantum Noise Cancellation, https://arxiv.org/abs/2408.04418
- Alexander Baumgärtner, Simon Hertlein, Tom Schmit, Davide Dreon, Carlos Máximo, Xiangliang Li, Giovanna Morigi, Tobias Donner: Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions, https://arxiv.org/abs/2407.09227
- Gabriele Natale, Alexander Baumgärtner, Justyna Stefaniak, David Baur, Simon Hertlein, Dalila Rivero, Tilman Esslinger, Tobias Donner: Synchronization of Quasi-Particle Excitations in a Quantum Gas with Cavity-Mediated Interactions, https://arxiv.org/abs/2504.17731
- David Baur, Simon Hertlein, Alexander Baumgärtner, Justyna Stefaniak, Tilman Esslinger, Gabriele Natale, Tobias Donner: Bandstructure of a coupled BEC-cavity system: effects of dissipation and geometry, https://arxiv.org/abs/2504.17730
- Daniel Ortuño-Gonzalez, Rui Lin, Justyna Stefaniak, Alexander Baumgärtner, Gabriele Natale, Tobias Donner, R. Chitra: Pauli crystal superradiance, https://arxiv.org/abs/2505.02837
- Marin Ðujić, Mateo Kruljac, Lovre Kardum, Neven Šantić, Damir Aumiler, Ivor Krešić, Ticijana Ban: Collective light shifts of many cavity modes probed by an optical frequency comb, https://arxiv.org/abs/2505.10115
QNet Workshop
We will organize at the end of the project a three-days' workshop on “Harnessing noise for quantum technologies” open to a wide interdisciplinary scientific and industrial community. The workshop will be organized for 50 participants at the Institute of Physics (IOPZg) in Zagreb. We will share our results and findings and will consider extending our work beyond the scope of the current project.