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理论物理通讯：英文版

Scheme for Teleportation of a Multipartite Quantum State by Using a Single Entangled Pair as Quantum Channel

Wang, Xinwen, Zhiyong, Xia, Lixin

Published Jan 1, 2007• 3 citations
OpenAlex

Abstract

我们在场为由单个 EPR 的一个未知多国参加的二水平的状态的完美的远距传物的一个理论计划(爱因斯坦—Podolsky—Rosen ) 配对，然后概括它多铺平，即，一个 N-quNit 状态能是由单个 quNit 的 teleportcd 纠缠的对，与另外的本地单一的操作。计划的特征是与纠纷的减少的数量移植一个多国参加的状态的电视花去更少古典位。

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我们在场为由单个 EPR 的一个未知多国参加的二水平的状态的完美的远距传物的一个理论计划(爱因斯坦—Podolsky—Rosen ) 配对，然后概括它多铺平，即，一个 N-quNit 状态能是由单个 quNit 的 teleportcd 纠缠的对，与另外的本地单一的操作。计划的特征是与纠纷的减少的数量移植一个多国参加的状态的电视花去更少古典位。
为电视移植的一个简单计划一个未知 M-qubit 像猫的状态被建议。这个计划的步骤能简单地被总结：disentangle-teleport-reconstruct 纠纷。如果从发送者的合适的单一的操作和大小被给，一个未知 M-qubit 像猫的状态的远距传物能被变换成单个 qubit 远距传物。同时，接收装置应该也与适当辅助 qubits 的介绍执行恰好单一的操作证实要求的纠缠的状态的成功的远距传物。现在的计划能被概括到电视港口一个未知 M-quNit 状态，即，一个 M-quNit 状态能是单个 quNit 移植的电视纠缠的对。
I propose to replace the dual classical and nonlocal channels used for teleporting unknown quantum states in the original protocol (OP) [Bennett, C. H., et al. Phys. Rev. Lett. 70 1895 (1993)] by either (i) one single quantum channel or (ii) two nonlocal channels in order to turn the OP into an all-quantum teleportation (AQT) protocol. Ideally, N runs of single channel AQT can be achieved with a single Einstein-Podolsky-Rosen (EPR) pair, in contrast with the OP, which consumes N EPR pairs. In the two nonlocal channels proposal, Alice uses the superdense coding technique to send Bob her result, which makes AQT more economical than OP.
在这篇论文，我们在场为移植 multi-qudit 量状态的电视的一个计划从到经由许多控制器的接收装置查理的艾莉斯摆动的发送者，谁的控制参数，用纠纷交换格言联盟者被获得 d 维的 EPR 对。在我们的计划，杨的 qutrit 控制了远距传物协议[Commun。Theor。Phys。49 (2008 ) 338 ] 基于钟状态，纠纷交换被概括到 qudit 盒子。multi-qudit 的计划拥有比 multi-qutrit 的有更高的代码能力和更好的安全的优点。