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 JQIS  Vol.3 No.1 , March 2013
Re-Formulation of Mean King’s Problem Using Shannon’s Entropy
Abstract: Mean King’s problem is formulated as a retrodiction problem among noncommutative observables. In this paper, we reformulate Mean King’s problem using Shannon’s entropy as a first step of introducing quantum uncertainty relation with delayed classical information. As a result, we give informational and statistical meanings to the estimation on Mean King problem. As its application, we give an alternative proof of nonexistence of solutions of Mean King’s problem for qubit system without using entanglement.
Cite this paper: M. Yoshida and H. Imai, "Re-Formulation of Mean King’s Problem Using Shannon’s Entropy," Journal of Quantum Information Science, Vol. 3 No. 1, 2013, pp. 6-9. doi: 10.4236/jqis.2013.31002.
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