论文标题
量子多体系统几乎完整的复兴
Almost complete revivals in quantum many-body systems
论文作者
论文摘要
初始非平衡状态的复兴是多体量子系统中动态热化理论的永远关注的问题。在这里，我们考虑了相互作用的旋转1/2的不可整合的晶格，并显示了如何构建量子状态，以使给定的自旋1/2最初是最大偏振的，然后在预定的时间时刻显示了初始极化几乎完全恢复。对此类复兴的实验观察可以用于基准测试量子模拟器，仅测量一个局部可观察到。我们进一步建议利用这些复兴来延迟秘密披露。
Revivals of initial non-equilibrium states is an ever-present concern for the theory of dynamic thermalization in many-body quantum systems. Here we consider a nonintegrable lattice of interacting spins 1/2 and show how to construct a quantum state such that a given spin 1/2 is maximally polarized initially and then exhibits an almost complete recovery of the initial polarization at a predetermined moment of time. An experimental observation of such revivals may be utilized to benchmark quantum simulators with a measurement of only one local observable. We further propose to utilize these revivals for a delayed disclosure of a secret.
