论文标题
突然淬灭后量子相干性和量子渔民信息的动力学
Dynamics of Quantum Coherence and Quantum Fisher Information After Sudden Quench
论文作者
论文摘要
相对熵和$ L_ {1} $ - 连贯性的标准，以及Wigner-yanase-skew和Quantum fisher信息，用于在存在时间依赖的横向磁场的情况下，用于时间依赖的耦合XY自旋链。与系统的初始状态无关，尽管相干性的相对熵，$ l_ {1} $ - 连贯性和量子渔民信息是无能的，令人惊讶的是，动态的wigner-yanase-skew信息可以真正介绍平衡关键点。我们还观察到，当将系统淬灭至临界点时，这些数量显示抑制和复兴。此外，第一个抑制时间（复兴）时间与系统大小及其缩放率线性缩放，对于所有与初始阶段无关的淬火率都是唯一的。这是第一个抑制时间（复兴）时间的承诺普遍性。
The dynamics of relative entropy and $l_{1}$-norm of coherence, as well as, the Wigner-Yanase-skew and quantum Fisher information are studied for a time-dependent coupled XY spin chain in presence of a time-dependent transverse magnetic field. Independent of the initial state of the system and while the relative entropy of coherence, $l_{1}$-norm of coherence, and quantum Fisher information are incapable, surprisingly, the dynamic Wigner-Yanase-skew information can truly spotlight the equilibrium critical point. We also observe that when the system is quenched to the critical point, these quantities show suppressions and revivals. Moreover, the first suppression (revival) time scales linearly with the system size and its scaling ratio is unique for all quenches independent to the initial phase. This is the promised universality of the first suppression (revival) time.
