Recovering quantum correlations from amplitude damping decoherence by weak measurement reversal

  • Authors:

  • Yan-Ling Li;Xing Xiao

  • Affiliations:

  • School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou, China 341000;College of Physics and Electronic Information, Gannan Normal University, Ganzhou, China 341000

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2013

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Abstract

We consider a weak measurement reversal proposal to recover quantum correlations of two-qubit system under local amplitude damping channels. With weak measurement reversal, we show that quantum correlations do not vanish but preserve a finite value in the limit of the noise strength $$p\rightarrow 1$$, which can be attributed to the probabilistic nature of this method. The experimental feasibility of this approach is also discussed in pure optical systems.