Tight bounds for the entanglement of formation of Gaussian states

被引：12
|
作者：
Nicacio, Fernando [1 ]
de Oliveira, Marcos C. [2 ]
机构：
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP, Brazil
[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP, Brazil
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
Quantum entanglement;
D O I：
10.1103/PhysRevA.89.012336
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We establish tight upper and lower bounds for the entanglement of formation of an arbitrary two-mode Gaussian state employing the necessary properties of Gaussian channels. Both bounds are strictly given by the entanglement of formation of symmetric Gaussian states, which are simply constructed from the reduced states obtained by partial trace of the original one.
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页数：4
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