摘要
利用一个(N+1)粒子部分纠缠Greenberger-Horne-Zeilinger(GHZ)态作为量子通道,提出了概率远程制备N粒子GHZ态的两个方案。我们考虑了怎样远程制备一个任意的GHZ态,即两个参数α和β都是复数的情况。此外,计算了远程制备总的成功概率和需要的经典信息量。
Two schemes for probabilistic remote preparation of N-particle Greenberger-Horne-Zeilinger （GHZ） class state are presented by using a partially entangled （ N ＋ 1 ） -particle GHZ state as quantum channel. The remote preparation for an arbitrary state with complex parameters α and β is taken into account. Moreover, the total success probability and classical communication cost are calculated.
出处
《量子光学学报》
CSCD
北大核心
2008年第4期354-359,共6页
Journal of Quantum Optics
基金
Supported by the National Natural Science Foundation of China under Grant(No.60667001)~~
关键词
远程态制备
GHZ态
量子纠缠
经典通讯
remote state preparation
GHZ class state
quantum entanglement
classical communication
