Protecting entanglement from decoherence using weak measurement and quantum measurement reversal

被引：0
|
作者：
Kim, Yong-Su [1 ]
Lee, Jong-Chan [1 ]
Kwon, Osung [1 ]
Kim, Yoon-Ho [1 ]
机构：
[1] Pohang Univ Sci & Technol POSTECH, Dept Phys, Pohang 790784, South Korea
来源：
QUANTUM COMMUNICATIONS AND QUANTUM IMAGING XI | 2013年 / 8875卷
关键词：
Quantum measurement; Entanglement sudden death; Decoherence; FREE SUBSPACES; STATE; TELEPORTATION; PURIFICATION; CHANNELS;
D O I：
10.1117/12.2024442
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Decoherence, which causes degradation of entanglement and in some cases entanglement sudden death, is a critical issue faced in quantum information. Protecting entanglement from decoherence, therefore, is essential in practical realization of quantum computing and quantum communication protocols. In this paper, we demonstrate a novel method to protect entanglement from amplitude damping decoherence via weak measurement and quantum measurement reversal. It is shown that even entanglement sudden death can be circumvented.
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页数：7
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