量子电子学报2025，Vol.42Issue(2)：206-216,11.DOI:10.3969/j.issn.1007-5461.2025.02.006
基于光量子行走的多体量子纠缠纯态克隆方案
Cloning scheme for multipartite entangled pure states via photonic quantum walk
摘要
Abstract
The no-cloning theorem has sparked considerable interest in achieving high-fidelity approximate quantum cloning.Most of the previous studies mainly focused on the cloning of single-particle states,and cloning schemes used there are incapable of cloning quantum entangled states in multipartite systems.Few schemes were proposed for cloning multiparticle states,which consume more entanglement resources with loss of qubits,and the fidelity of the cloned state is relatively low.In this paper,cloning schemes for bipartite and tripartite entangled states based on photonic quantum walk and entanglement swapping are proposed.The results show that according to the proposed schemes,two high-fidelity(up to 0.75)cloned states can be obtained with less quantum resource consumption.Because of the simple cloning steps,few quantum resources and high fidelity,these schemes are both efficient and feasible.Moreover,this cloning machine eliminates the need for tracing out cloning machine,thereby minimizing resource waste.关键词
量子光学/纠缠克隆/光量子行走/多粒子纠缠Key words
quantum optics/entanglement cloning/photonic quantum walk/multipartite entanglement分类
物理学引用本文复制引用
王国翠,林志,李曦坤,杨青,杨名..基于光量子行走的多体量子纠缠纯态克隆方案[J].量子电子学报,2025,42(2):206-216,11.基金项目
国家自然科学基金项目(11947102,12004005),安徽省自然科学基金项目(2008085MA16,2008085QA26),安徽省高校协同创新项目(GXXT-2022-039),安徽省高校杰出青年基金项目(2022AH020008) （11947102,12004005）
