论文标题
原子腔体系中的耗散时间晶体：陷阱和竞争相互作用的影响
Dissipative time crystal in an atom-cavity system: Influence of trap and competing interactions
论文作者
论文摘要
在Keßler等人的实验中，最近实现的耗散时间晶体在激光泵的原子腔系统中。 [物理。莱特牧师。 127，043602（2021）]在定性上与理想化极限的理论描述一致，在这里，我们研究了在存在由谐波陷阱提供的不均匀电位的情况下，在谐波陷阱和竞争短暂和无限范围的相互作用的情况下，这种耗散时间晶体的稳定性。我们注意到，这些特征在原子腔系统的任何实现中都是无处不在的。通过绘制动力学相图并研究如何通过谐波陷阱和短距离相互作用对其进行修改，我们证明了长期寿命的耗散时间晶体超出理想化极限的持久性。我们显示了具有和没有细头的平台的亚稳态耗散时间晶体的出现，分别用于紧密的谐波限制和强烈的接触相互作用。
While the recently realized dissipative time crystal in a laser-pumped atom-cavity system in the experiment of Keßler et al. [Phys. Rev. Lett. 127, 043602 (2021)] is qualitatively consistent with a theoretical description in an idealized limit, here, we investigate the stability of this dissipative time crystal in the presence of an inhomogeneous potential provided by a harmonic trap, and competing short- and infinite-range interactions. We note that these features are ubiquitous in any realization of atom-cavity systems. By mapping out the dynamical phase diagram and studying how it is modified by the harmonic trap and short-range interactions, we demonstrate the persistence of long-lived dissipative time crystals beyond the idealized limit. We show the emergence of metastable dissipative time crystals with and without prethermalization plateaus for tight harmonic confinement and strong contact interaction, respectively.
