基于量子非破坏测量的低纠缠三光子 W 态的超纠缠浓缩

doi:10.3969/j.issn.1007-5461.2026.02.013

量子电子学报 ›› 2026, Vol. 43 ›› Issue (2): 319-326.doi: 10.3969/j.issn.1007-5461.2026.02.013

• 量子光学 • 上一篇

基于量子非破坏测量的低纠缠三光子 W 态的超纠缠浓缩

潘垒 , 韩菲 , 朱孟正 *

淮北师范大学物理与电子工程学院, 安徽淮北 235000

收稿日期:2024-10-12 修回日期:2025-01-25 出版日期:2026-03-28 发布日期:2026-03-28
通讯作者: E-mail: mzzhu@139.com E-mail:E-mail: mzzhu@139.com
作者简介:安徽省自然科学基金面上项目 (1808085MA08), 安徽省高等学校质量工程项目 (2023jcjs093)
基金资助:
安徽省自然科学基金面上项目

Hyperentanglement concentration of low⁃entangled three⁃photon W states based on quantum non⁃destructive measurement

PAN Lei, HAN Fei, ZHU Mengzheng *

College of Physics and Electronic Engineering, Huaibei Normal University, Huaibei 235000, China

Received:2024-10-12 Revised:2025-01-25 Published:2026-03-28 Online:2026-03-28

摘要/Abstract

摘要： 最大量子纠缠态可作为量子传输信道以确保信息传输的高保真度。然而, 在量子通信的存储与传输过程中, 远程双方共享的两粒子量子最大纠缠态容易受到噪声环境的影响, 导致量子态的纠缠质量下降, 最大纠缠态退化为部分纠缠态, 从而影响信息传输的保真度。为解决这一问题, 本文提出了一种基于纠缠浓缩的方法, 利用量子非破坏性光子数测量, 并结合简单的线性光学元件, 将任意低纠缠度的超纠缠三光子W态浓缩为最大纠缠的超纠缠态。研究结果表明, 该浓缩方案在一定程度上减少了量子资源的消耗, 同时降低了实验难度, 具有潜在的实际应用价值。

关键词: 量子通信, 纠缠浓缩, 超纠缠态, W态

Abstract: Maximally entangled quantum states can serve as quantum transmission channels to ensure high fidelity in information transfer. However, during the storage and transmission of quantum communication, the two-particle maximum quantum entangled state shared by remote parties will be affected by noise environment, resulting in a reduction in the entanglement quality of the quantum state. And the maximum entangled state will degenerate into a partially entangled state, thereby affecting the fidelity of the transmitted information. To address this issue, this paper proposes a method based on entanglement concentration. This method utilizes quantum non-demolition photon number measurements combined with simple linear optical elements to concentrate an arbitrary low-entanglement hyperentangled three-photon W state into a maximally entangled hyperentangled state. The results show that the entanglement concentration scheme reduces the consumption of quantum resources to a certain extent while also lowering the experimental difficulty, showing a potential in practical applications.

Key words: quantum communication, entanglement concentration, hyperentanglement state, W state

中图分类号:

O413.1

潘垒 , 韩菲 , 朱孟正 . 基于量子非破坏测量的低纠缠三光子 W 态的超纠缠浓缩[J]. 量子电子学报, 2026, 43(2): 319-326.

PAN Lei, HAN Fei, ZHU Mengzheng . Hyperentanglement concentration of low⁃entangled three⁃photon W states based on quantum non⁃destructive measurement[J]. Chinese Journal of Quantum Electronics, 2026, 43(2): 319-326.

参考文献

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基于量子非破坏测量的低纠缠三光子 W 态的超纠缠浓缩

Hyperentanglement concentration of low⁃entangled three⁃photon W states based on quantum non⁃destructive measurement

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