论文标题
BCS超导体动力阶段的腔Qed量子模拟器
A cavity-QED quantum simulator of dynamical phases of a BCS superconductor
论文作者
论文摘要
我们建议使用被困在光腔中的冷原子合奏模拟BCS超导体的动态阶段。有效的库珀对通过原子的内部状态进行编码，并通过在与公共腔模式的原子之间交换虚拟光子来实现有吸引力的相互作用。控制相互作用强度与有效库珀对的可调色散关系结合使用，可以探索BCS模型的完整动力学相图，这是系统参数和准备好的初始状态的函数。我们的提议为研究量子磁性和超导性的非平衡特征的研究铺平了道路，该特征通过利用冷原子气体中的原子 - 光相互作用。
We propose to simulate dynamical phases of a BCS superconductor using an ensemble of cold atoms trapped in an optical cavity. Effective Cooper pairs are encoded via internal states of the atoms and attractive interactions are realized via the exchange of virtual photons between atoms coupled to a common cavity mode. Control of the interaction strength combined with a tunable dispersion relation of the effective Cooper pairs allows exploration of the full dynamical phase diagram of the BCS model, as a function of system parameters and the prepared initial state. Our proposal paves the way for the study of non-equilibrium features of quantum magnetism and superconductivity by harnessing atom-light interactions in cold atomic gases.
