Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Matrix Representation and Entanglement Criterion of Two-Qubit Permutationally Invariant States
DOI:
10.16355/j.cnki.issn1007-9432tyut.2017.06.025
Received:
Accepted:
| Corresponding author | Institute | |
| YAN Siqing | College of mathematics ,Taiyan University of Technology |
abstract:
In the paper, some relevant properties of swap operator are discussed, and the concrete matrix representation for two-qubit permutationally invariant states is given. The correlation between realignment matrix and partial transpose matrix of these states is obtained. By the relations among entries of matrix, a quantitative criterion is given to judge whether or not two-qubit permutationally invariant states are entangled. |
Keywords:
permutationally invariant state;symmetric quantum state;swap operator