Enhancing teleportation fidelity by means of weak measurements or reversal
Annals of Physics(2014)
摘要
The enhancement of teleportation fidelity by weak measurement or quantum measurement reversal is investigated. One qubit of a maximally entangled state undergoes the amplitude damping, and the subsequent application of weak measurement or quantum measurement reversal could improve the teleportation fidelity beyond the classical region. The improvement could not be attributed to the increasing of entanglement, quantum discord, classical correlation or total correlation. We declare that it should be owed to the probabilistic nature of the method.
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关键词
Teleportation,Amplitude damping channel,Weak measurement,Quantum measurement reversal
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