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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 16 — Aug. 11, 2014
  • pp: 19055–19068

Avoiding entanglement sudden death using single-qubit quantum measurement reversal

Hyang-Tag Lim, Jong-Chan Lee, Kang-Hee Hong, and Yoon-Ho Kim  »View Author Affiliations


Optics Express, Vol. 22, Issue 16, pp. 19055-19068 (2014)
http://dx.doi.org/10.1364/OE.22.019055


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Abstract

When two entangled qubits, each owned by Alice and Bob, undergo separate decoherence, the amount of entanglement is reduced, and often, weak decoherence causes complete loss of entanglement, known as entanglement sudden death. Here we show that it is possible to apply quantum measurement reversal on a single-qubit to avoid entanglement sudden death, rather than on both qubits. Our scheme has important applications in quantum information processing protocols based on distributed or stored entangled qubits as they are subject to decoherence.

© 2014 Optical Society of America

OCIS Codes
(270.5565) Quantum optics : Quantum communications
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: June 27, 2014
Manuscript Accepted: July 11, 2014
Published: July 29, 2014

Citation
Hyang-Tag Lim, Jong-Chan Lee, Kang-Hee Hong, and Yoon-Ho Kim, "Avoiding entanglement sudden death using single-qubit quantum measurement reversal," Opt. Express 22, 19055-19068 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-16-19055


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