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Quantum Information Processing

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01-10-2017

Enhancing the quantum state transfer between two atoms in separate cavities via weak measurement and its reversal

Authors: Yan-Ling Li, Jinsong Huang, Zhonghui Xu, Xing Xiao

Published in: Quantum Information Processing | Issue 10/2017

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Abstract

Taking the advantage of weak measurement and quantum measurement reversal, we propose a scheme to enhance the fidelity of transferring quantum state from one atom trapped in cavity to another distant one trapped in another cavity which is coupled by an optical fiber. It is turned out that the fidelity can be greatly improved even when the system is under serious dissipation. Moreover, the scheme works in both the strong-coupling and weak-coupling regimes. It is also robust to the ratio of the coupling constant between the atoms and the cavity modes to the coupling constant between the fiber and cavity modes. The underlying mechanism can be attributed to the probabilistic nature of weak measurements.

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Title: Enhancing the quantum state transfer between two atoms in separate cavities via weak measurement and its reversal
Authors: Yan-Ling Li
Jinsong Huang
Zhonghui Xu
Xing Xiao
Publication date: 01-10-2017
Publisher: Springer US
Published in: Quantum Information Processing / Issue 10/2017
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-017-1706-8

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