论文标题
谐振光增强了fermionic超流体的空腔QED模拟器中的相干性
Resonant light enhances phase coherence in a cavity QED simulator of fermionic superfluidity
论文作者
论文摘要
腔QED实验是光子介导相互作用支持的物质非平衡阶段的天然宿主。在这项工作中，我们通过研究腔体光子作为动力学自由度而不是通过虚拟过程的相互作用的动态自由度来考虑BCS超流体模型的空腔QED模拟。每当将腔频率调节与原子共振时，我们发现长时间连贯性的增强。我们讨论这与非平衡性超流量的增强相当，并突出了与最近在固态量子光学中研究的类似现象的相似性。我们还讨论了在我们的分析中包括光子损失和不均匀耦合的效果，讨论了在实验中观察这种增强的共振配对的条件。
Cavity QED experiments are natural hosts for non-equilibrium 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.
