Evolution of Relative Entropy of Coherence for Two Qubits States
Evolution of Relative Entropy of Coherence for Two Qubits States
复制标题
两个量子位态相干性相对熵的演化
DOI：
10.1007/s10773-019-04373-4
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发表时间：
2020
影响因子：
1.4
通讯作者：
Zhao Zhixin
中科院分区：
文献类型：
--
作者：
Song Yuanfeng;Wang Yaokun;Tang Hui;Zhao Zhixin
本文计算了当一个子系统或两个子系统通过振幅阻尼通道n次时，两个量子比特X态的输出态的相干性的相对熵。我们发现，无论振幅阻尼通道参数从0到1变化多大，输出态相干性的相对熵都是减小的。输出态相干相对熵的曲率随n的增大而逐渐增大。而且，当n较大时，随着振幅阻尼通道参数的增大，相干性会出现冻结现象.
In this paper, we calculate relative entropy of coherence of the output state of two qubitsXstates with 5 parameters when one subsystem or two subsystems goes through the amplitude damping channelntimes. We find that relative entropy of coherence of the output state decreases as the parametergof the amplitude damping channel continuously changes from zero to one no matter how muchnis. The curvature of relative entropy of coherence for the output state loosely increases gradually asnincreases. Furthermore whennis larger, frozen coherence can appear as the parametergof the amplitude damping channel increases.