Protecting entanglement from decoherence using weak measurement and quantum measurement reversal

Yong-Su Kim; Jong-Chan Lee; Osung Kwon; Yoon-Ho Kim

doi:10.1117/12.2024442

26 September 2013 Protecting entanglement from decoherence using weak measurement and quantum measurement reversal

Yong-Su Kim, Jong-Chan Lee, Osung Kwon, Yoon-Ho Kim

Proceedings Volume 8875, Quantum Communications and Quantum Imaging XI; 88750H (2013) https://doi.org/10.1117/12.2024442
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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.

Citation Download Citation

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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