AI 中文总结
研究实现量子隐形传态通用信道，用单个十二量子比特纠缠信道，通过局部贝尔态测量和单量子比特操作，实现任意三量子比特态双向及任意两量子比特态循环隐形传态，推广到多量子比特和多方，分析不同噪声下性能，提供可扩展高效的统一量子通信方法。
AI 中文摘要
量子隐形传态已从单量子比特、单向通信发展到多量子比特和多向协议。然而，现有方案大多依赖特定协议的纠缠资源，促使开发能同时支持多种通信任务的通用量子信道。本文证明单个十二量子比特纠缠信道具有通用性，可通过局部贝尔态测量和单量子比特操作实现任意三量子比特态的双向隐形传态及任意两量子比特态的循环隐形传态。两种协议进一步推广到多量子比特和多方配置。通过绘制隐形传态保真度与输入态参数和噪声强度的函数关系，在多种噪声信道下分析协议。结果显示不同噪声敏感性，双向协议在比特翻转噪声下对所有输入态和噪声强度都保持完美保真，循环协议更易受环境干扰。所提方案固有效率为25%，并与现有协议比较。该框架为现实噪声量子网络中的统一量子通信提供了可扩展且资源高效的方法。
英文摘要
Quantum teleportation has evolved from single-qubit, unidirectional communication to multi-qubit and multidirectional protocols. However, most existing schemes rely on protocol-specific entangled resources, motivating the development of universal quantum channels capable of supporting multiple communication tasks simultaneously. In this work, we demonstrate that a single twelve-qubit entangled channel exhibits such versatility by enabling the bidirectional teleportation of arbitrary three-qubit states and the cyclic teleportation of arbitrary two-qubit states through local Bell-state measurements and single-qubit operations. Both protocols are further generalized to multi-qubit and multi-party configurations, establishing the scalability of the proposed framework. To assess its practical applicability, the protocols are analyzed under amplitude-damping, phase-damping, bit-flip, phase-flip, and depolarizing noise channels by plotting the teleportation fidelity as a function of both the input-state parameters and noise strength. The analysis reveals distinct noise sensitivities, with the bidirectional protocol remaining perfectly faithful under bit-flip noise for all input states and noise strengths, while the cyclic protocol is consistently more vulnerable to environmental disturbances. The proposed schemes achieve an intrinsic efficiency of $25\%$, which is compared with several existing protocols. The framework therefore provides a scalable and resource-efficient approach to unified quantum communication in realistic noisy quantum networks.
Comments25 pages, 6 figures, 2 tables
