Dynamics of relative entropy of coherence under Markovian channels

被引：28
|
作者：
Situ, Haozhen [1 ]
Hu, Xueyuan [2 ,3 ]
机构：
[1] South China Agr Univ, Coll Math & Informat, Guangzhou 510642, Guangdong, Peoples R China
[2] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China
[3] Shandong Univ, Shandong Prov Key Lab Laser Technol & Applicat, Jinan 250100, Peoples R China
来源：
QUANTUM INFORMATION PROCESSING | 2016年 / 15卷 / 11期
关键词：
Relative entropy of coherence; Markovian channels; Decoherence; Weak measurement; QUANTUM MEASUREMENT REVERSAL; DECOHERENCE SUPPRESSION; ENTANGLEMENT;
D O I：
10.1007/s11128-016-1425-6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the relative entropy of coherence under the effect of certain one-qubit channels that are Markovian and noisy. The cohering power and decohering power of phase damping, amplitude damping, flip and depolarizing channels are analytically calculated. For phase damping channel, the decohering power on the x, y and z bases is the same. The same phenomenon is observed for the flip and depolarizing channels. Further, we show that weak measurement and its reversal can be employed to suppress the decohering power of the amplitude damping channel.
引用
收藏
页码：4649 / 4661
页数：13
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