Higher-order uncertainty bounds for mixed states
نویسندگان
چکیده
Uncertainty lower bounds for parameter estimations associated with a unitary family of mixed-state density matrices are obtained by embedding the space in Hilbert square-root matrices. In Hilbert-space setup measure uncertainty is given skew information second kind, while bound Wigner-Yanase conjugate observable. Higher-order corrections to determined higher-order quantum moments; expressions these moments worked out closed form.
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ژورنال
عنوان ژورنال: Journal of Physics A
سال: 2021
ISSN: ['1751-8113', '1751-8121']
DOI: https://doi.org/10.1088/1751-8121/ac2717