Determination of maximal Gaussian entanglement achievable by feedback-controlled dynamics.
Determination of maximal Gaussian entanglement achievable by feedback-controlled dynamics.
复制标题
确定反馈控制动力学可实现的最大高斯纠缠。
DOI:
10.1103/physrevlett.104.220501
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发表时间:
2009
影响因子:
8.6
通讯作者:
S. Mancini
中科院分区:
文献类型:
--
作者:
A. Serafini;S. Mancini
We determine a general upper bound for the steady-state entanglement achievable by continuous feedback for a system of any number of bosonic degrees of freedom. We apply such a bound to the specific case of parametric interactions--the most common practical way to generate entanglement in quantum optics--and single out optimal feedback strategies that achieve the maximal entanglement. We also consider the case of feedback schemes entirely restricted to local operations and compare their performance to the optimal, generally nonlocal, schemes.