| SEDLAK, Michal, Mário ZIMAN, Vladimír BUŽEK a Mark HILLERY. Unambiguous comparison of ensembles of quantum states. Physical Review A (Atomic, Molecular, and Optical Physics). 2008, roč. 77, č. 1, s. 042304-42311. ISSN 1050-2947. |
Další formáty:
BibTeX
LaTeX
RIS
@article{769991,
author = {Sedlak, Michal and Ziman, Mário and Bužek, Vladimír and Hillery, Mark},
article_number = {1},
keywords = {quantum information; quantum estimation},
language = {eng},
issn = {1050-2947},
journal = {Physical Review A (Atomic, Molecular, and Optical Physics)},
title = {Unambiguous comparison of ensembles of quantum states},
volume = {77},
year = {2008}
}
TY - JOUR
ID - 769991
AU - Sedlak, Michal - Ziman, Mário - Bužek, Vladimír - Hillery, Mark
PY - 2008
TI - Unambiguous comparison of ensembles of quantum states
JF - Physical Review A (Atomic, Molecular, and Optical Physics)
VL - 77
IS - 1
SP - 042304
EP - 042304
SN - 10502947
KW - quantum information
KW - quantum estimation
N2 - We present a solution of the problem of the optimal unambiguous comparison of two ensembles of unknown quantum states (psi_1)^k and (psi_2)^l. We consider two cases: 1) The two unknown states psi_1 and psi_2 are arbitrary states of qudits. 2) Alternatively, they are coherent states of a harmonic oscillator. For the case of coherent states we propose a simple experimental realization of the optimal "comparison" machine composed of a finite number of beam-splitters and a single photodetector.
ER -
SEDLAK, Michal, Mário ZIMAN, Vladimír BUŽEK a Mark HILLERY. Unambiguous comparison of ensembles of quantum states. \textit{Physical Review A (Atomic, Molecular, and Optical Physics)}. 2008, roč.~77, č.~1, s.~042304-42311. ISSN~1050-2947.
|
