54 citations · 69 across the 3 of their papers we have counts for
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quant-ph2008★ 15 cited
Locality and nonlocality in quantum pure-state identification problems
Y. Ishida, T. Hashimoto, M. Horibe +1
Suppose we want to identify an input state with one of two unknown reference states, where the input state is guaranteed to be equal to one of the reference states. We assume that…
quant-ph2008★ 54 cited
State discrimination with error margin and its locality
A. Hayashi, T. Hashimoto, M. Horibe
There are two common settings in a quantum-state discrimination problem. One is minimum-error discrimination where a wrong guess (error) is allowed and the discrimination success p…
quant-ph2006
Optimal estimation of an observable's expectation value for pure states for general measure of deviation
Minoru Horibe, Akihisa Hayashi, Takaaki Hashimoto
We investigate the optimal estimation of quantum expectation value of a physical observable, which minimizes a mean error with respect to general measure of deviation, when a finit…