Detailed Information on Publication Record
2008
Unambiguous comparison of ensembles of quantum states
SEDLAK, Michal, Mário ZIMAN, Vladimír BUŽEK and Mark HILLERYBasic information
Original name
Unambiguous comparison of ensembles of quantum states
Name in Czech
Bezchybne porovnavanie kvantovych stavov
Authors
SEDLAK, Michal (703 Slovakia), Mário ZIMAN (703 Slovakia, guarantor), Vladimír BUŽEK (703 Slovakia) and Mark HILLERY (840 United States of America)
Edition
Physical Review A (Atomic, Molecular, and Optical Physics), 2008, 1050-2947
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10000 1. Natural Sciences
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 2.908
RIV identification code
RIV/00216224:14330/08:00024782
Organization unit
Faculty of Informatics
UT WoS
000255457100041
Keywords in English
quantum information; quantum estimation
Tags
International impact, Reviewed
Změněno: 23/5/2009 08:01, doc. Mgr. Mário Ziman, Ph.D.
V originále
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.
In Czech
Najdenie optimalnej metody na bezchybne rozlisovanie viacerych kopii kvantovych stavov a jej implementacia pomocou optickych elementov.
Links
| GA201/07/0603, research and development project |
| ||
| MSM0021622419, plan (intention) |
|