摘要
本文研究了如何在二粒子纠缠态的量子受控传递中选择最佳量子通道的问题。分别利用四粒子GHZ态和四粒子特殊"反关联GHZ态"作为量子通道,本文提出了二粒子反关联纠缠态的量子受控传递的两个方案。通过对比两个方案下接受者最后采取的幺正操作的具体矩阵形式,分析了待传量子纠缠态与量子通道的关系,指出了四粒子GHZ态和四粒子特殊"反关联GHZ态"分别是二粒子正关联和反关联纠缠态各自隐形传递应该选择的最佳的量子通道。
How to choose the best quantum channel in controlled quantum teleportation of a two-particle entangled state is discussed in this paper.Using four-particle GHZ state and fourparticle special 'anti-correlating GHZ state' as quantum channel respectively,two controlled quantum teleportation schemes of anti-correlating entangled states are presented.The detailed matrix form of unitary transformations adopted by the receiver are compared in the two schemes,and the relationship between the quantum entangled state and quantum channel is analyzed.Then the best quantum channels of correlating entangled state and anti-correlating entangled state are proposed,which are four-particle GHZ state and four-particle special 'anti-correlating GHZ state' respectively.
出处
《量子光学学报》
CSCD
北大核心
2012年第2期120-127,共8页
Journal of Quantum Optics
基金
国家自然科学基金(6106800
111064016
11161049)
吉林省自然科学基金(201215239)
关键词
量子信道
量子受控传递
反关联纠缠态
正关联纠缠态
幺正变换
quantum channel
controlled quantum teleportation
anti-correlating entangled state
correlating entangled state
unitary transformation
