Quantifying nonclassicality of multimode bosonic fields via skew information. (4th March 2021)

• Record Type: Journal Article
• Authors: Zhang, Yue; Luo, Shunlong
• Is Part Of: Communications in theoretical physics. Volume 73:Number 4(2021)
• Publication Date: 2021-03-04
• Subjects: Bosonic fields -- nonclassicality -- Wigner-Yanase skew information -- multimode states -- correlations; Physics -- Periodicals; 530.105
• DOI: 10.1088/1572-9494/abdf44
• Languages: English
• ISSNs: 0253-6102

Abstract

Abstract: 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.