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Open Quantum Systems Decoherence

Quantum coherence of two-qubit over quantum channels with memory

arXiv
Authors: You-neng Guo, Ke Zeng, Qing-long Tian, Zheng-da Li

Year

2016

Paper ID

41556

Status

Preprint

Abstract Read

~2 min

Abstract Words

109

Citations

N/A

Abstract

Using the axiomatic definition of the coherence measure, such as the l1 norm and the relative entropy, we study the phenomena of two-qubit system quantum coherence through quantum channels where successive uses of the channels are memory. Different types of noisy channels with memory, such as amplitude damping, phase-damping, and depolarizing channels effect on quantum coherence have been discussed in detail. The results show that, quantum channels with memory can efficiently protect coherence from noisy channels. Particularly, as channels with perfect memory, quantum coherence is unaffected by the phase damping as well as depolarizing channels. Besides, we also investigate the cohering and decohering power of quantum channels with memory.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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  • Using the axiomatic definition of the coherence measure, such as the l1 norm and the relative entropy, we study the phenomena of two-qubit system quantum coherence through...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1612.08791 [2] arXiv https://arxiv.org/abs/1612.08791 [3] Publisher https://arxiv.org/abs/1612.08791

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