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arXiv 1102.2356quant-ph
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高斯纠缠在玻色子噪声信道中鲁棒性的简单证明

Simple proof of the robustness of Gaussian entanglement in bosonic noisy channels

Gerardo Adesso

摘要:

高斯态的极值被利用来表明,高斯态是最强大的,在所有可能的二分连续变量状态在固定的能量,对解纠缠由于噪声的演变马尔可夫高斯信道涉及耗散和热跳变。这证明了最近在[M. Allegra,P. Giorda,and M. G. A. Paris,Phys. Rev. Lett. { \bf 105},100503(2010)],提供了对该工作结论的严格验证。在更一般的玻色子开放系统动力学演化中,识别具有最大弹性的连续变量状态的问题仍然是开放的,可能包括相关噪声和非马尔可夫效应。

英文摘要:

The extremality of Gaussian states is exploited to show that Gaussian states are the most robust, among all possible bipartite continuous-variable states at fixed energy, against disentanglement due to noisy evolutions in Markovian Gaussian channels involving dissipation and thermal hopping. This proves a conjecture raised recently in [M. Allegra, P. Giorda, and M. G. A. Paris, Phys. Rev. Lett. {\bf 105}, 100503 (2010)], providing a rigorous validation of the conclusions of that work. The problem of identifying continuous variable states with maximum resilience to entanglement damping in more general bosonic open system dynamical evolutions, possibly including correlated noise and non-Markovian effects, remains open.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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