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Quantum Information Processing

, Volume 15, Issue 9, pp 3881–3891 | Cite as

Protecting entanglement from correlated amplitude damping channel using weak measurement and quantum measurement reversal

  • Xing Xiao
  • Yao Yao
  • Ying-Mao XieEmail author
  • Xing-Hua Wang
  • Yan-Ling Li
Article

Abstract

Based on the quantum technique of weak measurement, we propose a scheme to protect the entanglement from correlated amplitude damping decoherence. In contrast to the results of memoryless amplitude damping channel, we show that the memory effects play a significant role in the suppression of entanglement sudden death and protection of entanglement under severe decoherence. Moreover, we find that the initial entanglement could be drastically amplified by the combination of weak measurement and quantum measurement reversal even under the correlated amplitude damping channel. The underlying mechanism can be attributed to the probabilistic nature of weak measurements.

Keywords

Entanglement Weak measurement Correlated amplitude damping channel 

Notes

Acknowledgments

This work is supported by the Funds of the National Natural Science Foundation of China under Grant Nos. 11247006 and 11365011.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Xing Xiao
    • 1
  • Yao Yao
    • 2
  • Ying-Mao Xie
    • 1
    Email author
  • Xing-Hua Wang
    • 1
  • Yan-Ling Li
    • 3
  1. 1.College of Physics and Electronic InformationGannan Normal UniversityGanzhouChina
  2. 2.Microsystems and Terahertz Research CenterChina Academy of Engineering PhysicsChengduChina
  3. 3.School of Information EngineeringJiangxi University of Science and TechnologyGanzhouChina

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