Entanglement Dynamics of Two Qubits Coupled to a Noise Environment

被引：0
|
作者：
Liu Jin [1 ]
Xiang Shao-Hua [1 ,2 ]
Cui Hui-Ping [1 ]
Li Jian [1 ]
机构：
[1] Beijing Inst Technol, Sch Sci, Dept Phys, Beijing 100081, Peoples R China
[2] Huaihua Univ, Dept Phys & Elect Informat Sci, Huaihua 418008, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2009年 / 51卷 / 04期
基金：
中国国家自然科学基金;
关键词：
decoherence; entanglement; pure state; mixed state; 3-LEVEL ATOM; DECOHERENCE; SUPPRESSION; CAVITY; FIELDS; STATES; PHASE;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the time evolution of two-state systems (two qubits) initially in the pure entangle states or the maximally mixed states interacting with the individual environmental noise. It is shown that due to environment noise, all quantum entangled states are very fragile and become a classical mixed state in a short-time limit. But the environment can affect entanglement in very different ways. The type of decoherence process for certain entangled states belongs to amplitude damping, while the others belong to dephasing decoherence.
引用
收藏
页码：637 / 640
页数：4
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