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@article{769993,
author = {Ziman, Mário and Heinosaari, Teiko},
article_number = {1},
keywords = {quantum information; quantum estimation},
language = {eng},
issn = {1050-2947},
journal = {Physical Review A},
title = {Discrimination of quantum observables using limited resources},
volume = {77},
year = {2008}
}
TY - JOUR
ID - 769993
AU - Ziman, Mário - Heinosaari, Teiko
PY - 2008
TI - Discrimination of quantum observables using limited resources
JF - Physical Review A
VL - 77
IS - 1
SP - 042321
EP - 042321
SN - 10502947
KW - quantum information
KW - quantum estimation
N2 - We address the problem of unambiguous discrimination and identification among quantum observables. We set a general framework and investigate in details the case of qubit observables. In particular, we show that perfect discrimination with two shots is possible only for sharp qubit observables (e.g. Stern-Gerlach apparatuses) associated with mutually orthogonal directions. We also show that for sharp qubit observables associated to nonorthogonal directions unambiguous discrimination with an inconclusive result is always possible.
ER -
ZIMAN, Mário a Teiko HEINOSAARI. Discrimination of quantum observables using limited resources. \textit{Physical Review A}. 2008, roč.~77, č.~1, s.~042321-42328. ISSN~1050-2947.
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