Optimal entanglement-assisted discrimination of quantum
measurements

J 2014

Optimal entanglement-assisted discrimination of quantum measurements

MIKOVÁ, Martina, Michal SEDLÁK, Ivan STRAKA, Michal MIČUDA, Mário ZIMAN et. al.

Basic information

Original name

Optimal entanglement-assisted discrimination of quantum measurements

Name in Czech

Optimální provázaním asistovaná diskriminace kvantových měření

Authors

MIKOVÁ, Martina (203 Czech Republic), Michal SEDLÁK (703 Slovakia), Ivan STRAKA (203 Czech Republic), Michal MIČUDA (203 Czech Republic), Mário ZIMAN (703 Slovakia, belonging to the institution), Miroslav JEŽEK (203 Czech Republic), Miloslav DUŠEK (203 Czech Republic) and Jaromír FIURÁŠEK (203 Czech Republic)

Edition

Physical Review, 2014, 1050-2947

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10301 Atomic, molecular and chemical physics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.808

RIV identification code

RIV/00216224:14330/14:00080087

Organization unit

Faculty of Informatics

DOI

http://dx.doi.org/10.1103/PhysRevA.90.022317

UT WoS

000341251400007

Keywords in English

quantum measurement; quantum information; quantum optics

Změněno: 27/4/2015 05:06, RNDr. Pavel Šmerk, Ph.D.

Abstract

V originále

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.

Citovat

MIKOVÁ, Martina, Michal SEDLÁK, Ivan STRAKA, Michal MIČUDA, Mário ZIMAN, Miroslav JEŽEK, Miloslav DUŠEK and Jaromír FIURÁŠEK. Optimal entanglement-assisted discrimination of quantum measurements. Physical Review. 2014, vol. 90, No 2, p. 022317-22322. ISSN 1050-2947. Available from: https://dx.doi.org/10.1103/PhysRevA.90.022317.

@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 and Jaromír FIURÁŠEK. Optimal entanglement-assisted discrimination of quantum measurements. \textit{Physical Review}. 2014, vol.~90, No~2, p.~022317-22322. ISSN~1050-2947. Available from: https://dx.doi.org/10.1103/PhysRevA.90.022317.

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