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Entropic quantifier of spin-boson nonclassicality

文献类型：期刊论文

作者Zhang, Yue2,4,5; Jing, Boxuan5; He, Qiongyi1,4,5; Luo, Shunlong2,3
刊名JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
出版日期2022-10-21
卷号55期号:42页码:18
关键词spin-boson systems nonclassicality entropy excess Tsallis entropy quantum phase transition
ISSN号1751-8113
DOI10.1088/1751-8121/ac96dd
英文摘要Spin systems interacting with boson environments are ubiquitous in nature. To what extent quantum states in such systems depart from classicality is becoming an increasingly important issue. Here, we study nonclassicality in systems involving the interaction between a spin and a boson mode. We introduce a simple and effective method for quantifying spin-boson nonclassicality in terms of the entropy excess between the classical and the quantum Tsallis entropy. The method can be naturally extended to more general systems. Fundamental properties of the nonclassicality quantifier are revealed, which render it reasonable for spin-boson states. Basic features are illustrated by a variety of typical spin-boson states. As applications, we further investigate spin-boson nonclassicality in the Dicke model, which sheds light on the normal-superradiant phase transition and quantum metrology.
资助项目National Natural Science Foundation of China[11975026] ; National Natural Science Foundation of China[12125402] ; National Key R&D Program of China[2020YFA0712700] ; China Postdoctoral Science Foundation[2021M690414] ; Beijing Postdoctoral Research Foundation[2021ZZ091] ; Beijing Natural Science Foundation[Z190005]
WOS研究方向Physics
语种英语
WOS记录号WOS:000871737700001
出版者IOP Publishing Ltd
源URL[http://ir.amss.ac.cn/handle/2S8OKBNM/60773]  
专题应用数学研究所
通讯作者He, Qiongyi
作者单位1.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China
2.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
4.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
5.Peking Univ, Sch Phys, Frontiers Sci Ctr Nanooptoelect, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yue,Jing, Boxuan,He, Qiongyi,et al. Entropic quantifier of spin-boson nonclassicality[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,2022,55(42):18.
APA Zhang, Yue,Jing, Boxuan,He, Qiongyi,&Luo, Shunlong.(2022).Entropic quantifier of spin-boson nonclassicality.JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL,55(42),18.
MLA Zhang, Yue,et al."Entropic quantifier of spin-boson nonclassicality".JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL 55.42(2022):18.

入库方式： OAI收割

来源：数学与系统科学研究院

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