The Entanglement Generation in PT-Symmetric Optical Quadrimer System

被引：4
|
作者：
Kalaga, Joanna K. [1 ,2 ,3 ]
机构：
[1] Univ Zielona Gora, Inst Phys, Quantum Opt & Engn Div, Prof Z Szafrana 4a, PL-65516 Zielona Gora, Poland
[2] Palacky Univ, Joint Lab Opt, 17 Listopadu 12, Olomouc 77146, Czech Republic
[3] Palacky Univ, CAS, Inst Phys, Fac Sci, 17 Listopadu 12, Olomouc 77146, Czech Republic
来源：
SYMMETRY-BASEL | 2019年 / 11卷 / 09期
关键词：
PT-symmetry; entanglement; negativity; SEPARABILITY;
D O I：
10.3390/sym11091110
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We discuss a model consisting of four single-mode cavities with gain and loss energy in the first and last modes. The cavities are coupled to each other by linear interaction and form a chain. Such a system is described by a non-Hermitian Hamiltonian which, under some conditions, becomes PT-symmetric. We identify the phase-transition point and study the possibility of generation bipartite entanglement (entanglement between all pairs of cavities) in the system.
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页数：9
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