Entanglement of Pseudo-Hermitian Random States

被引：0

作者：

Goulart, Cleverson Andrade ^{[1
]}

Pato, Mauricio Porto ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Fis, Caixa Postal 66318, BR-05314970 Sao Paulo, Brazil

来源：

ENTROPY | 2020年 / 22卷 / 10期

关键词：

quantum information; von Neumann entropy; random matrix theory; pseudo-Hermitian operators; PT-symmetry; SUDDEN-DEATH; PT-SYMMETRY; HAMILTONIANS;

D O I：

10.3390/e22101109

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a recent paper (A. Fring and T. Frith, Phys. Rev A 100, 101102 (2019)), a Dyson scheme to deal with density matrix of non-Hermitian Hamiltonians has been used to investigate the entanglement of states of a PT-symmetric bosonic system. They found that von Neumann entropy can show a different behavior in the broken and unbroken regime. We show that their results can be recast in terms of an abstract model of pseudo-Hermitian random matrices. It is found however that although the formalism is practically the same, the entanglement is not of Fock states but of Bell states.

引用

页码：1 / 13

页数：13

共 37 条

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