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26 September 2013 Protecting entanglement from decoherence using weak measurement and quantum measurement reversal
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Abstract
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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Yong-Su Kim, Jong-Chan Lee, Osung Kwon, and Yoon-Ho Kim "Protecting entanglement from decoherence using weak measurement and quantum measurement reversal", Proc. SPIE 8875, Quantum Communications and Quantum Imaging XI, 88750H (26 September 2013); https://doi.org/10.1117/12.2024442
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