Resonant light enhances phase coherence in a cavity QED simulator of fermionic superfluidity

Kelly SP, Thompson JK, Rey AM, Marino J (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Physical Review Research American Physical Society

Book Volume: 4

Article Number: L042032

Journal Issue: 4

DOI: 10.1103/PhysRevResearch.4.L042032

Abstract

Cavity QED experiments are natural hosts for nonequilibrium phases of matter supported by photon-mediated interactions. In this work, we consider a cavity QED simulation of the BCS model of superfluidity, by studying regimes where the cavity photons act as dynamical degrees of freedom instead of mere mediators of the interaction via virtual processes. We find an enhancement of long time coherence following a quench whenever the cavity frequency is tuned into resonance with the atoms. We discuss how this is equivalent to enhancement of non-equilibrium superfluidity and highlight similarities to an analogous phenomena recently studied in solid state quantum optics. We also discuss the conditions for observing this enhanced resonant pairing in experiments by including the effect of photon losses and inhomogeneous coupling in our analysis.

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1 Quantenkooperativität von Licht und Materie - QuCoLiMa

Related research project(s)

Synchronizing quantum spins with long-range dissipation (D04) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Joint Institute for Laboratory Astrophysics (JILA) US United States (USA) (US) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) University of California US United States (USA) (US)

How to cite

APA:

Kelly, S.P., Thompson, J.K., Rey, A.M., & Marino, J. (2022). Resonant light enhances phase coherence in a cavity QED simulator of fermionic superfluidity. Physical Review Research, 4(4). https://doi.org/10.1103/PhysRevResearch.4.L042032

MLA:

Kelly, Shane P., et al. "Resonant light enhances phase coherence in a cavity QED simulator of fermionic superfluidity." Physical Review Research 4.4 (2022).

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