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arXiv · 1103.1311

Robustness of non-Gaussian entanglement against noisy amplifier and attenuator environments

Krishna Kumar Sabapathy·J. Solomon Ivan·R. Simon
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Abstract

The recently developed Kraus representation for bosonic Gaussian channels is employed to study analytically the robustness of non-Gaussian entanglement against evolution under noisy attenuator and amplifier environments, and compare it with the robustness of Gaussian entanglement. Our results show that some non-Gaussian states with one ebit of entanglement are more robust than all Gaussian states, even the ones with arbitrarily large entanglement, a conclusion of direct consequence to the recent conjecture by Allegra et al. [PRL, 105, 100503 (2010)].

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Krishna Kumar Sabapathy, J. Solomon Ivan, R. Simon. 2011-11-17. Robustness of non-Gaussian entanglement against noisy amplifier and attenuator environments. https://doi.org/10.1103/physrevlett.107.130501

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