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Optoelectronics Letters

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

Liu ., Yuling, Man, Zhong-xiao, Xia, YunJie

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

一个新量协议到电视港口到在 M 控制器(M < N ) 下面的固定接收装置的从一个发送者州的纠缠的任意的未知 N-qubit 被建议。要求的量资源 non-maximally 是 M 纠缠的 Greenberger-Horne-Zeilinger (GHZ ) 状态和 N-M non-maximally 纠缠了 Einstein-Podolsky-Rosen (EPR ) 对。发送者执行 N 2N 粒子上的概括钟状态大小。控制器拿 M 沿着 X 轴的单个粒子的测量，和接收装置需要介绍一个辅助二水平的粒子提取量信息有如果控制器与它合作，联合起来的忠实的概率的联盟者。

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一个新量协议到电视港口到在 M 控制器(M < N ) 下面的固定接收装置的从一个发送者州的纠缠的任意的未知 N-qubit 被建议。要求的量资源 non-maximally 是 M 纠缠的 Greenberger-Horne-Zeilinger (GHZ ) 状态和 N-M non-maximally 纠缠了 Einstein-Podolsky-Rosen (EPR ) 对。发送者执行 N 2N 粒子上的概括钟状态大小。控制器拿 M 沿着 X 轴的单个粒子的测量，和接收装置需要介绍一个辅助二水平的粒子提取量信息有如果控制器与它合作，联合起来的忠实的概率的联盟者。
为有 d 维的 Greenberger Horne-Zeilinger (GHZ ) 状态的任意的 multi-quiditstate 的控制远距传物的一个一般计划被建议。为一个 arbitrarym-qudit 状态，发送者艾莉斯表演到她的 2mqudits 和控制器上的射影的大小需要仅仅拿的概括钟状态一些单个粒子的大小。接收装置 Charliecan 重建由执行某 single-qudit 的未知 m-qudit 状态 herparticles 上的单一的操作如果她与所有控制器合作。因为量隧道是 ofmaximally 纠缠的 GHZ 说的一个序列，为在这个计划的 qudits 的内在的效率接近 100%in 原则。
A scheme for probabilistic controlled teleportation of a triplet W state using combined non-maximally entangled channel of two Einstein–Podolsky–Rosen (EPR) states and one Greenberger–Horne–Zeilinger (GHZ) state is proposed. In this scheme, an (m + 2 )-qubit GHZ state serves not only as the control parameter but also as the quantum channel. The m control qubits are shared by m supervisors. With the aid of local operations and individual measurements, including Bell-state measurement, Von Neumann measurement, and mutual classical communication etc., Bob can faithfully reconstruct the original state by performing relevant unitary transformations. The total probability of successful teleportation is only dependent on channel coefficients of EPR states and GHZ, independent of the number of supervisor m. This protocol can also be extended to probabilistic controlled teleportation of an arbitrary N-qubit state using combined non-maximally entangled channel of N – 1 EPR states and one (m + 2 )-qubit GHZ.