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Versatile and controlled quantum teleportation network
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作者 周瑶瑶 梅鹏娴 +4 位作者 刘艳红 吴量 李雁翔 闫智辉 贾晓军 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第3期415-423,共9页
A quantum teleportation network involving multiple users is essential for future quantum internet.So far,controlled quantum teleportation has been demonstrated in a three-user network.However,versatile and controlled ... A quantum teleportation network involving multiple users is essential for future quantum internet.So far,controlled quantum teleportation has been demonstrated in a three-user network.However,versatile and controlled quantum teleportation network involving more users is in demand,which satisfies different combinations of users for practical requirements.Here we propose a highly versatile and controlled teleportation network that can switch among various combinations of different users.We use a single continuous-variable six-partite Greenberger-Horne-Zeilinger(GHZ)state to realize such a task by choosing the different measurement and feedback operations.The controlled teleportation network,which includes one sub-network,two sub-networks and three sub-networks,can be realized for different application of user combinations.Furthermore,the coherent feedback control(CFC)can manipulate and improve the teleportation performance.Our approach is flexible and scalable,and would provide a versatile platform for demonstrations of complex quantum communication and quantum computing protocols. 展开更多
关键词 quantum teleportation coherent feedback control VERSATILE controlled transformation
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Quantum state protection from finite-temperature thermal noise with application to controlled quantum teleportation
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作者 王驰 Sajede Harraz +1 位作者 张骄阳 丛爽 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第5期261-271,共11页
We propose a quantum state protection scheme via quantum feedforward control combined with environment-assisted measurement to protect arbitrary unknown initial states from the finite-temperature thermal noise(FTTN).T... We propose a quantum state protection scheme via quantum feedforward control combined with environment-assisted measurement to protect arbitrary unknown initial states from the finite-temperature thermal noise(FTTN).The main strategy is to transfer the quantum system to a noise-robust state by weak measurement and feedforward control before the noise channel.Then we apply the environment-assisted measurement on the noise channel to select our desired damped states that are invertible to the initial state.After the noise channel,the reversal operations are applied to restore the initial state.We consider the protection of a single-qubit system,derive the analytical expressions of the success probability and the fidelity,and analyze the influence of key parameters on the performance of the proposed scheme.Unlike previous studies,there is no trade-off between the fidelity and the success probability in the proposed scheme;hence one could maximize them separately.Simulation results show that the proposed scheme can greatly improve the fidelity of the quantum state with a certain success probability.Moreover,the proposed scheme is successfully applied to improving the fidelity of controlled quantum teleportation through two independent FTTN channels from the perspective of protecting the shared entanglement. 展开更多
关键词 quantum feedforward control environment-assisted measurement weak measurement quantum teleportation
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Non-Gaussian approach:Withstanding loss and noise of multi-scattering underwater channel for continuous-variable quantum teleportation
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作者 吴昊 张航 +4 位作者 朱益武 罗高峰 左峙岳 阮新朝 郭迎 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第10期262-272,共11页
Underwater quantum communication plays a crucial role in ensuring secure data transmission and extensible quantum networks in underwater environments.However,the implementation of such applications encounters challeng... Underwater quantum communication plays a crucial role in ensuring secure data transmission and extensible quantum networks in underwater environments.However,the implementation of such applications encounters challenges due to the light attenuation caused by the complicated natural seawater.This paper focuses on employing a model based on seawater chlorophyll-a concentration to characterize the absorption and scattering of light through quantum channels.We propose a multi-scattering random channel model,which demonstrates characteristics of the excess noise in different propagation directions of communication links.Furthermore,we consider the fidelity of a continuous-variable quantum teleportation through seawater channel.To enhance transmission performance,non-Gaussian operations have been conducted.Numerical simulations show that incorporating non-Gaussian operations enables the protocol to achieve higher fidelity transmission or lower fidelity fading rates over longer transmission distances. 展开更多
关键词 continuous-variable quantum teleportation multi-scattering underwater channel non-Gaussian operations
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Improving the teleportation of quantum Fisher information under non-Markovian environment
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作者 李艳玲 曾艺博 +1 位作者 姚林 肖兴 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第1期172-177,共6页
Quantum teleportation is designed to send an unknown quantum state between two parties.In the perspective of remote quantum metrology,one may be interested in teleporting the information that is encoded by physical pa... Quantum teleportation is designed to send an unknown quantum state between two parties.In the perspective of remote quantum metrology,one may be interested in teleporting the information that is encoded by physical parameters synthesized by quantum Fisher information(QFI).However,the teleported QFI is often destroyed by the unavoidable interaction between the system and the environment.Here,we propose two schemes to improve the teleportation of QFI in the non-Markovian environment.One is to control the quantum system through the operations of weak measurement(WM)and corresponding quantum measurement reversal(QMR).The other is to modify the quantum system based on the monitoring result of the environment(i.e.,environment-assisted measurement,EAM).It is found that,in the non-Markovian environment,these two schemes can improve the teleportation of QFI.By selecting the appropriate strengths of WM and QMR,the environment noise can be completely eliminated and the initial QFI is perfectly teleported.A comprehensive comparison shows that the second scheme not only has a higher probability of success than the first one,but also has a significant improvement of the teleported QFI. 展开更多
关键词 weak measurement environment-assisted measurement teleportation of quantum Fisher information
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分布式量子计算研究进展 被引量:1
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作者 王升斌 窦猛汉 +2 位作者 吴玉椿 郭国平 郭光灿 《量子电子学报》 CAS CSCD 北大核心 2024年第1期1-25,共25页
量子比特的高效拓展是量子计算获取量子加速优势需要解决的基本问题,分布式量子计算(DQC)因其高度可行性和灵活性,成为解决量子比特拓展问题的关键技术之一。根据芯片间通信方式的不同,分布式量子计算可以分为基于量子隐形传态和基于量... 量子比特的高效拓展是量子计算获取量子加速优势需要解决的基本问题,分布式量子计算(DQC)因其高度可行性和灵活性,成为解决量子比特拓展问题的关键技术之一。根据芯片间通信方式的不同,分布式量子计算可以分为基于量子隐形传态和基于量子线路拆分的分布式量子计算两种类型,前者主要面向容错量子计算,而后者被认为可在中等规模含噪声量子(NISQ)时代有效提升量子计算机算力。从长远角度来看,作为量子网络的主要应用之一,分布式量子计算可以更好地整合接入量子网络的海量量子计算机以解决高难度问题。首先介绍了分布式量子计算的来源和类型,在此基础上,给出了两类分布式量子计算的基本原理和发展状况,以及关注度较高的应用算法和编译优化方法。 展开更多
关键词 量子信息 分布式量子计算 量子隐形传态 量子线路拆分
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一种分布式量子计算中传输代价的优化方法
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作者 陈新宇 曹可欣 +3 位作者 朱明强 程学云 冯世光 管致锦 《量子电子学报》 CAS CSCD 北大核心 2024年第2期318-329,共12页
分布式量子计算是解决现有量子计算设备还不足以支持大规模量子计算问题的有效途径,分布式子系统之间通过隐形传态建立通信链路来传输量子位,隐形传态的次数决定了分布式量子计算的传输代价。为了减少分布式子系统间的隐形传态次数,提... 分布式量子计算是解决现有量子计算设备还不足以支持大规模量子计算问题的有效途径,分布式子系统之间通过隐形传态建立通信链路来传输量子位,隐形传态的次数决定了分布式量子计算的传输代价。为了减少分布式子系统间的隐形传态次数,提出了一种跨门合并传输模型,该模型允许多个不连续的门通过一次隐形传态完成传输。基于该传输模型,对分布式量子计算的隐形传态次数进行优化。在不考虑分布式子系统量子位数时,与现有的研究结果相比隐形传态次数平均减少57.3%;在分布式子系统量子位数受限的情况下使用该模型,在消耗更少量子位的同时,隐形传态次数平均减少14.6%,针对较大规模的量子线路,优化率达58.8%。 展开更多
关键词 量子计算 隐形传态 量子线路 传输代价
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任意三粒子GHZ态和W态的概率隐形传态
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作者 王浩圳 谭晓青 +1 位作者 许青山 包戴鹏伟 《电子科技大学学报》 EI CAS CSCD 北大核心 2024年第2期291-298,共8页
构造了一个全新的由两个多粒子部分纠缠态组成的用于量子隐形传态(QT)的量子信道。利用构造的量子信道,提出了两个任意三粒子GHZ态和W态的受控概率隐形传态的三方方案。发送者执行贝尔态测量和单粒子测量,控制者执行贝尔态测量,接收者... 构造了一个全新的由两个多粒子部分纠缠态组成的用于量子隐形传态(QT)的量子信道。利用构造的量子信道,提出了两个任意三粒子GHZ态和W态的受控概率隐形传态的三方方案。发送者执行贝尔态测量和单粒子测量,控制者执行贝尔态测量,接收者引入一个辅助粒子并执行相应酉操作,可实现任意三粒子GHZ态和W态的概率隐形传送。两个QT方案的总成功概率都是8d^(2)n^(2)(其中d和n是量子信道的系数)。 展开更多
关键词 贝尔态测量 部分纠缠态 量子隐形传态 酉操作
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基于EJM测量的量子隐形传态的探讨
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作者 余明星 纪豪森 丁东 《华北科技学院学报》 2024年第1期43-46,66,共5页
基于Gisin在2019年提出的联合测量Elegant Joint Measurement(EJM),本文对量子隐形传态过程进行初步探讨。计算EJM测量后量子态的演化过程,重点研究θ=0和θ=π/2两种情况下系统恢复待传送未知量子态的演化矩阵。结果表明,θ=π/2时的... 基于Gisin在2019年提出的联合测量Elegant Joint Measurement(EJM),本文对量子隐形传态过程进行初步探讨。计算EJM测量后量子态的演化过程,重点研究θ=0和θ=π/2两种情况下系统恢复待传送未知量子态的演化矩阵。结果表明,θ=π/2时的演化矩阵是幺正矩阵,而θ=0时的演化矩阵是非幺正矩阵。 展开更多
关键词 EJM测量 量子隐形传态 量子演化
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记忆幅值阻尼噪声下带有弱测量与恢复测量的量子隐形传态
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作者 向生建 陈云松 《量子电子学报》 CAS CSCD 北大核心 2024年第1期143-150,共8页
认识并降低噪声对传输粒子保真度的影响,是量子隐形传态重要的研究方向之一。不同于以前的独立噪声和带记忆的Pauli噪声,研究了记忆幅值阻尼噪声对保真度的影响,并给出了一个抵抗该噪声信道的方案。该方案通过让参与者在粒子分发前实施... 认识并降低噪声对传输粒子保真度的影响,是量子隐形传态重要的研究方向之一。不同于以前的独立噪声和带记忆的Pauli噪声,研究了记忆幅值阻尼噪声对保真度的影响,并给出了一个抵抗该噪声信道的方案。该方案通过让参与者在粒子分发前实施弱测量而粒子接收后实施恢复测量的方式提高保真度。研究结果表明,记忆幅值阻尼信道的记忆因子强度与保真度大小呈正相关,并且在部分记忆信道与全记忆信道下弱测量与恢复测量方法也能一定程度上提高传输粒子的保真度。 展开更多
关键词 量子光学 保真度分析及增强 弱测量与恢复测量 量子隐形传态 记忆幅值阻尼噪声
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任意未知三维二粒子态的短距离量子隐形传态
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作者 彭家寅 刘淼 +1 位作者 汤建钢 向毅 《深圳大学学报(理工版)》 CAS CSCD 北大核心 2024年第2期248-252,共5页
为克服长距离量子隐形传态方案中局域操作受限,且易受环境干扰影响通信质量的缺陷,利用1个三维Bell态和1个处于基态的辅助粒子作为量子信道,提出一个任意未知三维二粒子态的短距离量子隐形传态新方案.在该方案中,发送方和接收方除共享三... 为克服长距离量子隐形传态方案中局域操作受限,且易受环境干扰影响通信质量的缺陷,利用1个三维Bell态和1个处于基态的辅助粒子作为量子信道,提出一个任意未知三维二粒子态的短距离量子隐形传态新方案.在该方案中,发送方和接收方除共享三维Bell态外,还必须预先共享1个辅助粒子.发送者对辅助粒子执行量子门运算后,需对其Bell粒子和未知量子系统进行联合测量,并向接收者发送该测量的经典信息.结果表明,接收者以100%的概率将自己拥有的Bell粒子与辅助粒子的量子态转换成被发送者摧毁的未知量子态的精确复制品.本方案传输距离短、承载信息量大、耗费纠缠资源少,在诸如芯片的固态器件上的量子隐形传态有很好的应用前景. 展开更多
关键词 量子通信 三维隐形传态 短距离 三维Bell态 三维二粒子态
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电子远传智能压力变送器的技术与应用
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作者 高晓红 《中国高新科技》 2024年第18期13-15,共3页
文章介绍了电子远传智能压力变送器的研究背景、测量原理、应用场景以及未来发展趋势。电子远传智能压力变送器作为一种先进的压力测量设备,具有远程传输、智能感知、高精度等特点,在石油、化工、冶金、电力等流程工业、科研实验、医疗... 文章介绍了电子远传智能压力变送器的研究背景、测量原理、应用场景以及未来发展趋势。电子远传智能压力变送器作为一种先进的压力测量设备,具有远程传输、智能感知、高精度等特点,在石油、化工、冶金、电力等流程工业、科研实验、医疗诊断等领域得到广泛应用。文章详细阐述了电子远传智能压力变送器的实现原理、方法及其应用,并对比分析了不同情况下的性能差异。展望未来,电子远传智能压力变送器将朝着更高精度、更低功耗、更智能化方向发展,具有巨大的应用前景和市场潜力。 展开更多
关键词 电子远传 总线技术 压力传感器 智能测量
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量子远距传态(Teleportation)在量子计算网络中的实现 被引量:3
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作者 蒋玉蓉 冯芒 +1 位作者 高克林 朱熙文 《量子电子学报》 CAS CSCD 北大核心 2001年第3期193-197,共5页
本文提出了一个通过量子计算网络来对三个未知量子态同时进行量子远距传态(teleportation)的方案,对比以前的远距传态方案,本方案不仅效率高,更符合量子远距传态(teleportation)的原始定义,而且容易... 本文提出了一个通过量子计算网络来对三个未知量子态同时进行量子远距传态(teleportation)的方案,对比以前的远距传态方案,本方案不仅效率高,更符合量子远距传态(teleportation)的原始定义,而且容易扩展到同时传输多个未知量子态和多粒子最大纠缠态. 展开更多
关键词 量子远距传态 量子计算网络 协议 纠缠
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Several teleportation schemes of an arbitrary unknown multi-particle state via different quantum channels 被引量:21
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作者 彭家寅 莫智文 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第5期160-167,共8页
We first provide four new schemes for two-party quantum teleportation of an arbitrary unknown multi-particle state by using three-, four-, and five-particle states as the quantum channel, respectively. The successful ... We first provide four new schemes for two-party quantum teleportation of an arbitrary unknown multi-particle state by using three-, four-, and five-particle states as the quantum channel, respectively. The successful probability and fidelity of the four schemes reach 1. In the first two schemes, the receiver can only apply one of the unitary transformations to reconstruct the original state, making it easier for these two schemes to be directly realized. In the third and fourth schemes, the sender can preform Bell-state measurements instead of multipartite entanglement measurements of the existing similar schemes, which makes real experiments more suitable. It is found that the last three schemes may become tripartite controlled teleportation schemes of teleporting an arbitrary multi-particle state after a simple modification. Finally, we present a new scheme for three-party sharing an arbitrary unknown multi-particle state. In this scheme, the sender first shares three three-particle GHZ states with two agents. After setting up the secure quantum channel, an arbitrary unknown multi-particle state can be perfectly teleported if the sender performs three Bell-state measurements, and either of two receivers operates an appropriate unitary transformation to obtain the original state with the help of other receiver's three single-particle measurements. The successful probability and fidelity of this scheme also reach 1. It is demonstrated that this scheme can be generalized easily to the case of sharing an arbitrary unknown multi-particle state among several agents. 展开更多
关键词 quantum information quantum teleportation quantum state sharing multi-particle state
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Teleportation of Two-Particle Entangled State via Cluster State 被引量:28
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作者 LI Da-Chuang CAO Zhuo-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第3期464-466,共3页
In this paper, two schemes for teleporting an unknown two-particle entangled state from the sender (Alice) to the receiver (Bob) via a four-particle entangled cluster state are proposed. In these two schemes, the ... In this paper, two schemes for teleporting an unknown two-particle entangled state from the sender (Alice) to the receiver (Bob) via a four-particle entangled cluster state are proposed. In these two schemes, the unknown twoparticle entangled state can be teleported perfectly. The successful probabilities and fidelities of the schemes can reach unity. 展开更多
关键词 quantum teleportation Bell state measurement (BSM) quantum controlled phase gate
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Probabilistic teleportation of an arbitrary three-particle state 被引量:13
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作者 林秀 李洪才 《Chinese Physics B》 SCIE EI CAS CSCD 2005年第9期1724-1731,共8页
A scheme for teleporting an arbitrary and unknown three-particle state from a sender to either one of two receivers is proposed. The quantum channel is composed of a two-particle non-maximally entangled state and two ... A scheme for teleporting an arbitrary and unknown three-particle state from a sender to either one of two receivers is proposed. The quantum channel is composed of a two-particle non-maximally entangled state and two three-particle non-maximally entangled W states. An arbitrary three-particle state can be perfectly teleported probabilistically if the sender performs three generalized Bell-state measurements and sends to the two receivers the classical result of these measurements, and either one of the two receivers adopts an appropriate unitary transformation conditioned on the suitable measurement outcomes of the other receiver. All kinds of unitary transformations are given in detail. 展开更多
关键词 probabilistic teleportation arbitrary three-particle state unitary transformation three-particle entangled W state
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High-Dimensional Multi-particle Cat-Like State Teleportation 被引量:15
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作者 ZENGBei LONGGui-Lu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2002年第5期537-540,共4页
Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the secon... Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the second protocol it is realized by -dimensional GHZ-basis measurement. 展开更多
关键词 teleportation Bell measurement GHZ measurement
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Teleportation of n-Particle State via n Pairs of EPR Channels 被引量:11
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作者 CAOMin ZHUShi-Qun FANGJian-Xing 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第5期689-692,共4页
The teleportation of an arbitrary n-particle state is proposed if n pairs of identical EPR states are utilized as quantum channels. Independent Bell state measurements are performed for joint measurement. By using a ... The teleportation of an arbitrary n-particle state is proposed if n pairs of identical EPR states are utilized as quantum channels. Independent Bell state measurements are performed for joint measurement. By using a special Latin square of order , explicit expressions of outcomes after the Bell state measurements by Alice (sender) and the corresponding unitary transformations by Bob (receiver) can be derived. It is shown that the teleportation of n-particle state can be implemented by a series of single-qubit teleportation. 展开更多
关键词 teleportation n-particle state EPR channels Latin square
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Many-Agent Controlled Teleportation of Multi-qubit Quantum Information via Quantum Entanglement Swapping 被引量:14
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作者 ZHANG Zhan-Jun LIU Yi-Min MAN Zhong-Xiao 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第5X期847-850,共4页
We present a method to teleport multi-qubit quantum information in an easy way from a sender to a receiver via the control of many agents in a network. Only when all the agents collaborate with the quantum information... We present a method to teleport multi-qubit quantum information in an easy way from a sender to a receiver via the control of many agents in a network. Only when all the agents collaborate with the quantum information receiver can the unknown states in the sender's qubits be fully reconstructed in the receiver's qubits. In our method, agents's control parameters are obtained via quantum entanglement swapping. As the realization of the many-agent controlled teleportation is concerned, compared to the recent method [G.P. Yang, et al., Phys. Rev. A 70 (2004) 022329], our present method considerably reduces the preparation difficulty of initial states and the identification difficulty of entangled states, moreover, it does not need local Hadamard operations and it is more feasible in technology. 展开更多
关键词 quantum teleportation quantum information quantum entanglement swapping
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Teleportation attack on the QSDC protocol with a random basis and order 被引量:8
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作者 高飞 温巧燕 朱甫臣 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第9期3189-3193,共5页
The quantum secure direct communication (QSDC) protocol with a random basis and order is analysed and an effective attack, i.e. teleportation attack, is presented. An eavesdropper can obtain half of the transmitted ... The quantum secure direct communication (QSDC) protocol with a random basis and order is analysed and an effective attack, i.e. teleportation attack, is presented. An eavesdropper can obtain half of the transmitted secret bits with the help of this special attack. It is shown that quantum teleportation can be employed to weaken the role of the order-rearrangement encryption at least in a certain circumstance. Meanwhile, a possible improvement on this protocol is proposed, which makes it secure against this kind of attack. 展开更多
关键词 quantum secure direct communication quantum cryptography CRYPTANALYSIS teleportation
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Teleportation of two-atom entangled state in resonant cavity quantum electrodynamics 被引量:9
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作者 杨贞标 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第2期329-334,共6页
An alternative scheme is presented for teleportation of a two-atom entangled state in cavity quantum electrodynamics (QED). It is based on the resonant atom-cavity field interaction. In the scheme, only one cavity i... An alternative scheme is presented for teleportation of a two-atom entangled state in cavity quantum electrodynamics (QED). It is based on the resonant atom-cavity field interaction. In the scheme, only one cavity is involved, and the number of the atoms needed to be detected is decreased compared with the previous scheme. Since the resonant atom-cavity field interaction greatly reduces the interaction time, the decoherence effect can be effectively suppressed during the teleportation process. The experimental feasibility of the scheme is discussed. The scheme can easily be generalized to the teleportation of N-atom Greeninger-Horne-Zeilinger (GHZ) entangled states. The number of atoms needed to be detected does not increase as the number of the atoms in the GHZ state increases. 展开更多
关键词 teleportation two-atom entangled state resonant cavity QED
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