Controlled preparation of phases in two-dimensional time crystals
Controlled preparation of phases in two-dimensional time crystals
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DOI：
10.1103/physrevresearch.3.043203
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发表时间：
2021-07
影响因子：
4.2
通讯作者：
Arkadiusz Kuroś;R. Mukherjee;F. Mintert;K. Sacha
中科院分区：
文献类型：
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作者：
Arkadiusz Kuroś;R. Mukherjee;F. Mintert;K. Sacha
对物相的研究有助于理解物质的新状态。一种这样的物质状态是时间晶体，它构成了周期性驱动的相互作用的多体系统，自发地打破了时间平移对称性。利用玻色-爱因斯坦凝聚体在周期驱动镜上反弹的模型(S)，可以实现任意周期(和维度)的时间晶体。在这项工作中，我们确定了表征二维时间晶体的不同相。通过确定最佳初始条件和系统参数的取值，为实现特定相位的时间晶体提供了一条实用的途径。这些不同的相可以映射到二维Hubbard格子模型上存在的多体状态，从而为在时间格子中进行多体物理的量子模拟打开了有趣的机会。
The study of phases is useful for understanding novel states of matter. One such state of matter are time crystals which constitute periodically driven interacting many-body systems that spontaneously break time translation symmetry. Time crystals with arbitrary periods (and dimensions) can be realized using the model of Bose-Einstein condensates bouncing on periodically-driven mirror(s). In this work, we identify the different phases that characterize the two-dimensional time crystal. By determining the optimal initial conditions and value of system parameters, we provide a practical route to realize a specific phase of the time crystal. These different phases can be mapped to the many-body states existing on a two-dimensional Hubbard lattice model, thereby opening up interesting opportunities for quantum simulation of many-body physics in time lattices.