期刊
IEEE TRANSACTIONS ON INFORMATION THEORY
卷 55, 期 1, 页码 439-443出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIT.2008.2008142
关键词
Generalized variance; operator monotone functions; quantum covariance; quantum Fisher information; uncertainty principle
In this paper, the relation between quantum covariances and quantum Fisher informations is studied. This study is applied to generalize a recently proved uncertainty relation based on quantum Fisher information. The proof given here considerably simplifies the previously proposed proofs and leads to more general inequalities.
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