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Skew information decreases under quantum measurements

✍ Scribed by Shunlong Luo; Qiang Zhang

Publisher
SP MAIK Nauka/Interperiodica
Year
2007
Tongue
English
Weight
336 KB
Volume
151
Category
Article
ISSN
0040-5779

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## Abstract The operationally defined invariant information introduced by Brukner and Zeilinger is related to the problem of estimation of quantum states. It quantifies how the estimated states differ in average from the true states in the sense of Hilbert‐Schmidt norm. This information evaluates t