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理论物理通讯：英文版

Schemes for Splitting Quantum Information with Four-Particle Genuine Entangled States

Zhan Zhan, You-Bang, Zhang, Qun-Yong, Wang, Yu-Wu

Published Jan 1, 2010• 3 citations
OpenAlex

Abstract

我们为由把四粒子的真纠缠的状态用作量隧道切开 single-qubit 和 two-qubit 状态建议二个计划。在发送者执行钟基础以后(或三深裂的 GHZ- 基础) 她的粒子上的大小，和合作者在他们的粒子上操作单个粒子的大小，州的接收装置能重建由使用适当单一的操作的发送者的原来的状态。在为切开 two-qubit 状态的计划，特别地，接收装置需要介绍一个辅助粒子并且执行一 C 不操作。

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我们为由把四粒子的真纠缠的状态用作量隧道切开 single-qubit 和 two-qubit 状态建议二个计划。在发送者执行钟基础以后(或三深裂的 GHZ- 基础) 她的粒子上的大小，和合作者在他们的粒子上操作单个粒子的大小，州的接收装置能重建由使用适当单一的操作的发送者的原来的状态。在为切开 two-qubit 状态的计划，特别地，接收装置需要介绍一个辅助粒子并且执行一 C 不操作。
簇状态的新应用为一个任意的 three-qubit 状态的切开的量信息(QIS ) 被调查。在我们的计划，一个 four-qubit 簇状态和一个贝尔状态被一个发送者(艾莉斯) 分享，一个控制器(查理) ，和接收装置(鲍勃) 。发送者和控制器仅仅需要执行钟状态大小(BSM ) ，接收装置能重建由在他知道发送者和控制器的测量结果以后，在他的 qubits 上执行一些适当地单一的转变州的任意的 three-qubit。这个 QIS 计划是确定的。
We propose two schemes for splitting single- and two-qubit states by using four-particle genuine entangled state as the quantum channel. After the sender performs Bell-basis (or three-partite GHZ- basis) measurements on her particles, and the cooperators operate single-particle measurements on their particles, the state receiver can reconstruct the original state of the sender by applying the appropriate unitary operation. In particular, in the scheme for splitting two-qubit state, the receiver needs to introduce an auxiliary particle and carries out a C-NOT operation.