| MIKOVÁ, Martina, Michal SEDLÁK, Ivan STRAKA, Michal MIČUDA, Mário ZIMAN, Miroslav JEŽEK, Miloslav DUŠEK a Jaromír FIURÁŠEK. Optimal entanglement-assisted discrimination of quantum measurements. Physical Review. 2014, roč. 90, č. 2, s. 022317-22322. ISSN 1050-2947. Dostupné z: https://dx.doi.org/10.1103/PhysRevA.90.022317. |
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@article{1298095,
author = {Miková, Martina and Sedlák, Michal and Straka, Ivan and Mičuda, Michal and Ziman, Mário and Ježek, Miroslav and Dušek, Miloslav and Fiurášek, Jaromír},
article_number = {2},
doi = {http://dx.doi.org/10.1103/PhysRevA.90.022317},
keywords = {quantum measurement; quantum information; quantum optics},
language = {eng},
issn = {1050-2947},
journal = {Physical Review},
title = {Optimal entanglement-assisted discrimination of quantum measurements},
url = {http://dx.doi.org/10.1103/PhysRevA.90.022317},
volume = {90},
year = {2014}
}
TY - JOUR
ID - 1298095
AU - Miková, Martina - Sedlák, Michal - Straka, Ivan - Mičuda, Michal - Ziman, Mário - Ježek, Miroslav - Dušek, Miloslav - Fiurášek, Jaromír
PY - 2014
TI - Optimal entanglement-assisted discrimination of quantum measurements
JF - Physical Review
VL - 90
IS - 2
SP - 022317
EP - 022317
SN - 10502947
KW - quantum measurement
KW - quantum information
KW - quantum optics
UR - http://dx.doi.org/10.1103/PhysRevA.90.022317
L2 - http://dx.doi.org/10.1103/PhysRevA.90.022317
N2 - We investigate optimal discrimination between two projective single-qubit measurements in a scenario where the measurement can be performed only once. We consider general setting involving a tunable fraction of inconclusive outcomes and we prove that the optimal discrimination strategy requires an entangled probe state for any nonzero rate of inconclusive outcomes. We experimentally implement this optimal discrimination strategy for projective measurements on polarization states of single photons. Our setup involves a real-time electrooptical feed-forward loop which allows us to fully harness the benefits of entanglement in discrimination of quantum measurements. The experimental data clearly demonstrate the advantage of entanglement-based discrimination strategy as compared to unentangled single-qubit probes.
ER -
MIKOVÁ, Martina, Michal SEDLÁK, Ivan STRAKA, Michal MIČUDA, Mário ZIMAN, Miroslav JEŽEK, Miloslav DUŠEK a Jaromír FIURÁŠEK. Optimal entanglement-assisted discrimination of quantum measurements. \textit{Physical Review}. 2014, roč.~90, č.~2, s.~022317-22322. ISSN~1050-2947. Dostupné z: https://dx.doi.org/10.1103/PhysRevA.90.022317.
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