Protecting Distribution Entanglement by Weak Measurement and Reversal under Various Decoherence Sources
Protecting Distribution Entanglement by Weak Measurement and Reversal under Various Decoherence Sources
复制标题
在各种退相干源下通过弱测量和反转来保护分布纠缠
DOI:
10.1088/0253-6102/61/4/10
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发表时间:
2014-04
影响因子:
3.1
通讯作者:
YAO Chun-Mei
中科院分区:
文献类型:
--
作者:
Wang Qiong;YAO Chun-Mei
Protection of entanglement from disturbance of the environment is an essential task in quantum information processing. We examine the validity and limitation of the weak measurement and reversal (WMR) operation in the protection of distributed entanglement from various decoherence sources. Since the entanglement variation can be investigated analytically for an arbitrarily entangled bipartite pure state under three kinds of typical noisy quantum channels, we show explicitly that the WMR operation indeed helps for protecting distributed entanglement from amplitude damping and phase damping, but not for depolarizing. Experimental feasibility for testing our results is discussed using current laboratory techniques.
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影响因子:
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