量子电子学报2026，Vol.43Issue(2)：319-326,8.DOI:10.3969/j.issn.1007-5461.2026.02.013
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
摘要
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.关键词
量子通信/纠缠浓缩/超纠缠态/W态Key words
quantum communication/entanglement concentration/hyperentanglement state/W state分类
数理科学引用本文复制引用
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):319-326,8.基金项目
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) （1808085MA08）
