摘要
利用纠缠交换的方法实现了两粒子和三粒子纠缠态的纯化,并将该方法推广到多粒子纠缠态的情况,而且得出在所有的情况下从部分纠缠态获得最大纠缠态的概率均为2|b|2。在此过程中我们只使用了幺正变换和Hadam ard变换,而不需要经典通信。
The author investigate the purification of entangled two-particle states and entangled three-particle states by entanglement swapping, then populanze it to entangled multi-particle states, and the author find that the totol probability is 2|b|^2 in all kinds of states. In the process, only the unitary transformation and Hadamard transformation are nsed.
出处
《量子光学学报》
CSCD
北大核心
2006年第2期67-70,共4页
Journal of Quantum Optics
关键词
纠缠态
幺正变换
HADAMARD变换
entangled state
unitary transformation
Hadamard transformation