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理论物理通讯：英文版

Controlled Teleportation of Multi-qudit Quantum Information by Entanglement Swapping

Dong, Jian JIAN, Teng Teng, Jianfu, Wang, Shuyan

Published Jan 1, 2009• 2 citations
OpenAlex

Abstract

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。

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我们在场为在一个网络经由许多代理人的控制从一个发送者移植 multi-qutrit 量信息到接收装置的电视的一个计划。代理人的控制参数经由量纠纷交换被获得。在我们的计划，张和人是 QSS 协议[Phys。加快。一 72 (2005 ) 022303 ] 基于钟状态，纠纷交换被概括到一个 qutrit 盒子。我们的计划拥有比工作有更高的代码能力和更好的安全的优点[Commun。Theor。Phys。44 (2005 ) 847 ] 在为 multi-qubit 的控制远距传物上。

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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。
我们在场为在一个网络经由许多代理人的控制从一个发送者移植 multi-qutrit 量信息到接收装置的电视的一个计划。代理人的控制参数经由量纠纷交换被获得。在我们的计划，张和人是 QSS 协议[Phys。加快。一 72 (2005 ) 022303 ] 基于钟状态，纠纷交换被概括到一个 qutrit 盒子。我们的计划拥有比工作有更高的代码能力和更好的安全的优点[Commun。Theor。Phys。44 (2005 ) 847 ] 在为 multi-qubit 的控制远距传物上。
我们建议为与二部分分成三部分的 qutrit 州的纠缠的未知分成三部分的 qutrit 的控制概率的远距传物的一个协议作为量隧道纠缠了状态。在三维的 Hilbert 空格与概括 qutrit 钟基础测量，概括 qutrit π-state 测量和概括 Hadamard 操作符联系了，被发现那远距传物。我们概括协议因为未知 k 粒子 qudit 的控制概率的远距传物纠缠了状态，州的多粒子 qudit 纠缠了，分成三部分的 qudit 作为量隧道纠缠了状态。我们也计算在两个盒子中要求的古典通讯费用。
我们建议一个方法认识到由许多 qudits 组成通过的一个未知纠缠的状态的远距传物一部分在 2log (2 ) 的帮助下的 entangled-qudit 量隧道 d 小点古典通讯。在远距传物过程使用的操作包括概括钟状态大小和艾莉斯，执行的一系列 single-qudit pi 测量一系列概括 qudit 泡利不相容原理门和二水平的单一的门，以及 qubitmeasurement 由鲍勃表现了。因为一个格言联盟者纠缠了量隧道，远距传物的成功的概率变得联合起来。
In this paper, we present a scheme for teleporting multi-qudit quantum state, from the sender Alice to the receiver Charlie via many controllers Bobs, whose control parameters are obtained using entanglement swapping of maximally d-dimensional EPR pair. In our scheme, Yang's qutrit controlled teleportation protocol [Commun. Theor. Phys. 49 (2008) 338] based on Bell-state entanglement swapping is generalized to the qudit case. The scheme of multi-qudit owns the advantage of having higher code capacity and better security than that of multi-qutrit.
We present a scheme for teleporting multi-qutrit quantum information from a sender to a receiver via the control of many agents in a network. Agents's control parameters are obtained via quantum entanglement swapping. In our scheme, Zhang and Man's QSS protocol [Phys. Rev. A 72 (2005) 022303] based on Bell-state entanglement swapping is generalized to a qutrit case. Our scheme owns the advantage of having higher code capacity and better security than the work [Commun. Theor. Phys. 44 (2005) 847] on controlled teleportation for multi-qubit.
Abstract Recently, Liu et al. proposed a two-party quantum private comparison (QPC) protocol using entanglement swapping of Bell entangled state (Commun. Theor. Phys. 57 (2012) 583). Subsequently Liu et al. pointed out that in Liu et al.'s protocol, the TP can extract the two users' secret inputs without being detected by launching the Bell-basis measurement attack, and suggested the corresponding improvement to mend this loophole (Commun. Theor. Phys. 62 (2014) 210). In this paper, we first point out the information leakage problem toward TP existing in both of the above two protocols, and then suggest the corresponding improvement by using the one-way hash function to encrypt the two users' secret inputs. We further put forward the three-party QPC protocol also based on entanglement swapping of Bell entangled state, and then validate its output correctness and its security in detail. Finally, we generalize the three-party QPC protocol into the multi-party case, which can accomplish arbitrary pair's comparison of equality among K users within one execution.