Deterministic remote preparation of an arbitrary W-class state with multiparty
Deterministic remote preparation of an arbitrary W-class state with multiparty
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DOI：
10.1088/0953-4075/43/6/065501
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
M. Luo;Xiubo Chen;Songya Ma;Yixian Yang;Zhengming Hu
中科院分区：
文献类型：
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作者：
M. Luo;Xiubo Chen;Songya Ma;Yixian Yang;Zhengming Hu
我们关注的是设计一些确定性方案，用于远程准备从一个发送方到多个接收方之一的任意w类状态。与以前的远程准备方案相比，我们的方案中真正的接收者是发送方未知的。首先，通过引入一种新的纠缠变换，发送端可以通过两个四粒子GHZ态作为量子信道，确定性地向两个远端接收者之一制备具有复杂光谱的任意w类态。对于制备具有真实谱的w类状态，通过为发送方构造一个通用的、有用的测量基础，可以设计出具有单位成功概率的另一种经济的协议。这些方案通过两个多粒子GHZ态作为量子信道扩展到多方。计算所有方案的经典通信代价，确定所需的经典资源。
Our concern is to design some deterministic schemes for remotely preparing an arbitrary W-class state from one sender to one of a number of receivers. Compared with previous remote preparation schemes, the real receiver in our schemes is unknown to the sender. Firstly, by introducing a novel entanglement transformation the sender can deterministically prepare an arbitrary W-class state with complex spectra to one of two remote receivers via two four-particle GHZ states as the quantum channel. As for preparing a W-class state with real spectra, by constructing a general and useful measurement basis for the sender, another economical protocol can be designed with unit success probability. These schemes are extended to multiparties via two multi-particle GHZ states as the quantum channel. The classical communication costs of all the schemes are calculated to determine the classical resources required.