Remote state preparation with bipartite entangled states in noisy environments

被引：5
|
作者：
Liang Hua-Qiu [1 ,2 ]
Liu Jin-Ming [1 ]
机构：
[1] E China Normal Univ, Dept Phys, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
[2] Taizhou Univ, Dept Phys, Coll Phys & Elect Engn, Taizhou 318000, Peoples R China
来源：
ACTA PHYSICA SINICA | 2009年 / 58卷 / 06期
基金：
中国国家自然科学基金;
关键词：
remote state preparation; trace distance; entangled state; noisy channel;
D O I：
10.7498/aps.58.3692
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the influence of quantum noises on the processes of remote preparation of a qubit by using an Einstein-Podolsky-Rosen (EPR) state and a bipartite partially entangled state as the quantum channel respectively. By solving the master equation in the Lindblad form, we obtain the time evolution of the quantum channels. Then we use the trace distance to describe how close the output state and the initial state are in various noisy conditions. Our results show that the influence of the noise acting on z direction is the weakest, and the influence of the noises acting simultaneously on x, y, and z directions is the strongest.
引用
收藏
页码：3692 / 3698
页数：7
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