Generalized Quantum Measurement in Spin-Correlated Hyperon-Antihyperon Decays  

作　　者：Sihao Wu Chen Qian Yang-Guang Yang Qun Wang 吴思浩;钱辰;杨阳光;王群(Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;Beijing Academy of Quantum Information Sciences,Beijing 100193,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Mechanics and Physics,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China [2]Beijing Academy of Quantum Information Sciences,Beijing 100193,China [3]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [4]School of Mechanics and Physics,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《Chinese Physics Letters》2024年第11期1-11,共11页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12135011 and 12305010);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB34030102).

摘　　要：The rapid developments of quantum information science(QIS)have opened up new avenues for exploring fundamental physics.Quantum nonlocality,a key aspect for distinguishing quantum information from classical one,has undergone extensive examinations in particles’decays through the violation of Bell-type inequalities.Despite these advancements,a comprehensive framework based on quantum information theory for particle interaction is still lacking.Trying to close this gap,we introduce a generalized quantum measurement description for decay processes of spin-1/2 hyperons.We validate this approach by aligning it with established theoretical calculations and apply it to the joint decay of ΛΛ pairs.We employ quantum simulation to observe the violation of Clauser–Horne–Shimony–Holt inequalities in η_(c)/χ_(c0)→ΛΛˉprocesses.Our generalized measurement description is adaptable and can be extended to a variety of high energy processes,including decays of vector mesons,J/ψ,ψ(2S)→ΛΛ,in the Beijing Spectrometer Ⅲ(BESⅢ)experiment at the Beijing Electron Positron Collider(BEPC).The methodology developed in this study can be applied to quantum correlation and information processing in fundamental interactions.

关 键 词：quantum BESⅢ DECAY 

分 类 号：O413[理学—理论物理]