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Realignment entanglement criterion of phase damped Gaussian states

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Abstract

We derive the realignment entanglement criterion for non-Gaussian states prepared by two mode symmetric Gaussian states undergoing phase damping. The entanglement detecting ability is compared with that of second moment criterion and Fock space criterion of positive partial transpose. New non-Gaussian entangled states are detected.

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Acknowledgments

The author thanks the funding by the National Natural Science Foundation of China (Grant No. 60972071), Zhejiang Province Science and Technology Project of China (Grant No. 2009C31060), Zhejiang Province Natural Science Foundation (Grant No. LQ12F01012).

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  1. College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang, China

    Xiao-yu Chen

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  1. Xiao-yu Chen
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Correspondence to Xiao-yu Chen.

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Chen, Xy. Realignment entanglement criterion of phase damped Gaussian states. Quantum Inf Process 12, 3665–3674 (2013). https://doi.org/10.1007/s11128-013-0625-6

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  • DOI: https://doi.org/10.1007/s11128-013-0625-6

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