Dynamics of Cohering and Decohering Power under Markovian Channels

作者：Chen, Ming-Ming; Luo, Yu; Shao, Lian-He; Li, Yong-Ming^*

来源：Communications in Theoretical Physics, 2017, 68(5): 571-579.

DOI：10.1088/0253-6102/68/5/571

• l(1)-norm
• Renyi alpha-relative entropy
• Tsallis alpha-relative entropy
• single-qubit state
• Markovian channels
• cohering and decohering power

In this paper, we investigate the cohering and decohering power of the one-qubit Markovian channels with respect to coherence measures based on the l(1)-norm, the Renyi alpha-relative entropy and the Tsallis alpha-relative entropy of coherence, respectively. The amplitude damping channel, phase damping channel, depolarizing channel, and flip channels are analytically calculated. It shows that the decohering power of the amplitude damping channel on the x; y, and z basis is equal to each other. The same phenomenon can be seen for the phase damping channel and the flip channels. The cohering power for the phase damping channel and the flip channels on the x; y basis also equals to that on the z basis. However, the cohering and decohering power of the depolarizing channel is independent to the reference basises. And the cohering power of the amplitude damping channel on the x; y basis is different to that on the z basis.

• 出版日期2017-11
• 单位陕西师范大学