论文标题
突然的冻结和解冻纠缠共享
Sudden Freezing and Thawing of Entanglement Sharing in a Shrunken Volume
论文作者
论文摘要
在两个相同的两级原子与公共腔相互作用的一个兴奋性上下文中，我们检查了每个量子位与整个系统的其余部分之间所有双分部分的动力学。我们发现纠缠的新的非分析“突然”动力学行为。具体而言，系统的三个一对一纠缠的总和可以突然以最大值冻结，也可以突然以周期性的方式从该值中解冻。我们计算在几个不同的初始条件下突然冷冻和突然解冻的开始时间。还发现了永久冻结纠缠的现象。我们还确定了三个个体纠缠的总和的非平凡的上限，该纠缠仪表揭示了纠缠共享的概念，以缩水的“卷”。关于冷冻和解冻过程的进一步分析揭示了纠缠共享的定量和定性法律。
Within the one-excitation context of two identical two-level atoms interacting with a common cavity, we examine the dynamics of all bipartite one-to-other entanglements between each qubit and the remaining part of the whole system. We find a new non-analytic "sudden" dynamical behavior of entanglement. Specifically, the sum of the three one-to-other entanglements of the system can be suddenly frozen at its maximal value or can be suddenly thawed from this value in a periodic manner. We calculate the onset timing of sudden freezing and sudden thawing under several different initial conditions. The phenomenon of permanent freezing for entanglement is also found. We also identify a non-trivial upper limit for the sum of three individual entanglements, which exposes the concept of entanglement sharing in a shrunken "volume". Further analyses about freezing and thawing processes reveal quantitative and qualitative laws of entanglement sharing.
