四波混频和分束器网络中的量子导引  

Quantum Steering via Four-Wave Mixing Processes and Linear Beam Splitters

作　　者：李晓玲 翟淑琴[1,2,3] 刘奎 Li Xiaoling;Zhai Shuqin;Liu Kui(College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,Shanxi,China;State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,Shanxi,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,Shanxi,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西大学光电研究所量子光学与光量子器件国家重点实验室,山西太原030006 [3]山西大学极端光学协同创新中心,山西太原030006

出　　处：《光学学报》2025年第1期283-290,共8页Acta Optica Sinica

基　　金：国家自然科学基金(12074233);国家重点研发计划(2021YFC2201802);山西省自然科学基金(202203021211306)。

摘　　要：多组份量子导引具有独特的单向性和优越的灵活性,对于实现安全且高效的量子通信具有更大的优势和更广泛的应用前景。本文提出基于两个四波混频过程和线性分束器网络产生两个四模高斯态的方案,具体利用一个和两个线性分束器联合两个独立的四波混频过程,分别实现了四组份量子导引。对输出模式进行分析,两个方案都表现出丰富的多组份量子导引类型。基于第一个方案,第二个方案增加了一个线性分束器,通过调节线性分束器的透射率,方案一中没有的单模间导引在方案二中可以实现灵活操控(单向或双向不对称),同时联合导引的构型更加丰富。这对于构建需要的量子网络,实现安全的量子秘密共享和高效的量子通信任务具有重要的应用和意义。Objective Quantum communication,as a key technology to ensure future communication security,attracts wide attention and continues to develop rapidly.However,secure and efficient quantum communication requires quantum nonlocal correlations.Quantum steering,a unique form of quantum correlation distinct from entanglement and Bell nonlocality,enables directional information transmission.If Alice and Bob share a quantum state,Alice may steer Bob,but Bob may not steer Alice in return.This property facilitates the construction of quantum networks and the design of communication channels with specific functions.The four-wave mixing(FWM)process uses a nonlinear medium to generate spatially separated,correlated light beams through nonlinear interactions between input optical beams and atoms,providing a foundation for exploring quantum entanglement and nonclassical correlations in photons.Recent studies by Jing's team have generated multipartite entangled quantum states by cascading multiple FWM processes,producing tripartite,quadripartite,hexapartite,and twelve-partite entanglement.Additionally,combining the FWM process with a linear beam splitter generates quadripartite,octapartite,and twelve-partite entanglement.He's group achieves manipulation of tripartite quantum steering through different combinations of the FWM process,the linear beam splitter,and the nonlinear beam splitter(FWM process).Using cascaded FWM processes in symmetric and asymmetric structures,they study the monogamy relation of steering.The diversity and significance of FWM processes in quantum optics offer abundant possibilities for advancing quantum information science.Quantum secret sharing leverages the principles of quantum mechanics to distribute secret information among multiple independent individuals.This approach allows secrets to be retrieved only through cooperation,making it possible to detect eavesdroppers or dishonest participants.Quantum steering can allocate steering among players based on task requirements,providing a secure foundation

关 键 词：量子光学 量子通信 四波混频过程 多组份导引 量子秘密共享 

分 类 号：O437[机械工程—光学工程]