SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 18: Quantum Optics: Cavity and Waveguide QED I
Q 18.7: Talk
Tuesday, March 7, 2023, 12:45–13:00, E214
Quantum Theory for Self-organization in Many-body Cavity QED — •Tom Schmit1, Simon Jäger2, Tobias Donner3, and Giovanna Morigi1 — 1Theoretische Physik, Universität des Saarlandes, 66123 Saarbrücken, Germany — 2Physics Department and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany — 3Institute for Quantum Electronics, Eidgenössische Technische Hochschule Zürich, Otto-Stern-Weg 1, 8093 Zürich, Switzerland
Ensembles of atoms strongly coupled with the electric field of an optical cavity offer a formidable laboratory for studying the out-of-equilibrium dynamics of long-range systems in the quantum regime. In this work, we derive by means of the formalism developed in Ref. [1] a quantum master equation describing the dynamics of atoms which interact with a multimode high-finesse cavity. We then derive the BBGKY hierarchy and analyse the predictions in several relevant limits. Our theory reproduces the results of the experiment of Ref. [2] and provides a powerful tool for singling out the individual contributions to the onset of metastability in quantum globally-interacting systems.
[1] S. B. Jäger, T. Schmit, G. Morigi, M. J. Holland, and R. Betzholz, Phys. Rev. Lett. 129, 063601 (2022).
[2] A. Morales, P. Zupancic, J. Léonard, T. Esslinger, and T. Donner, Nature Materials 17, 686 - 690 (2018).