On the disentanglement of Gaussian quantum states by symplectic rotations

被引：1
|
作者：
de Gosson, Maurice A. [1 ]
机构：
[1] Univ Wien, Fak Math NuHAG, Oskar Morgenstern Pl 1, A-1090 Vienna, Austria
来源：
COMPTES RENDUS MATHEMATIQUE | 2020年 / 358卷 / 04期
关键词：
D O I：
10.5802/crmath.57
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
We show that every Gaussian mixed quantum state can be disentangled by conjugation with a unitary operator corresponding to a symplectic rotation via the metaplectic representation of the symplectic group. The main tools we use are the Werner-Wolf condition for separability on covariance matrices and the symplectic covariance of Weyl pseudo-differential operators.
引用
收藏
页码：459 / 462
页数：4
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