Quantifying nonclassicality of multimode bosonic fields via skew information  

作　　者：Yue Zhang Shunlong Luo 

机构地区：[1]Beijing Academy of Quantum Information Sciences,Beijing 100193,China [2]State Key Laboratory of Mesoscopic Physics,School of Physics,Frontiers Science Center for Nano-optoelectronics,Peking University,Beijing 100871,China [3]Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,China [4]School of Mathematical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Communications in Theoretical Physics》2021年第4期75-81,共7页理论物理通讯（英文版）

基　　金：supported by the National Key R&D Program of China,Grant No.2020YFA0712700;the National Natural Science Foundation of China,Grant Nos.11875317and 61833010。

摘　　要：We quantify the nonclassicality of multimode bosonic field states by adopting an information-theoretic approach involving the Wigner-Yanase skew information.The fundamental properties of the quantifier such as convexity,superadditivity,monotonicity,and conservation relations are revealed.The quantifier is illustrated by a variety of typical examples,and applications to the quantification of nonclassical correlations are discussed.Various extensions are indicated.

关 键 词：Bosonic fields NONCLASSICALITY Wigner-Yanase skew information multimode states correlations 

分 类 号：O413.1[理学—理论物理]