Journal
COMMUNICATIONS IN THEORETICAL PHYSICS
Volume 73, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1572-9494/abdf44
Keywords
Bosonic fields; nonclassicality; Wigner-Yanase skew information; multimode states; correlations
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Funding
- National Key R&D Program of China [2020YFA0712700]
- National Natural Science Foundation of China [11 875 317, 61 833 010]
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The article introduces a method to quantify the nonclassicality of multimode bosonic field states using an information-theoretic approach, and illustrates the fundamental properties and some applications of this quantifier. Various extensions are also mentioned for further exploration.
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.
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