Quantifying nonclassicality of multimode bosonic fields via skew information

• 作者: Yue Zhang Shunlong Luo
• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: QUANTUM PHYSICS AND QUANTUM INFORMATION
• 页码范围: 75-81
• 页数: 7页
• 语种: 英文

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.