Optimum unambiguous discrimination between linearly independent symmetric states

Authors
Chefles, A Barnett, SM
Citation
A. Chefles et Sm. Barnett, Optimum unambiguous discrimination between linearly independent symmetric states, PHYS LETT A, 250(4-6), 1998, pp. 223-229
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
03759601 → ACNP
Volume
250
Issue
4-6
Year of publication
1998
Pages
223 - 229
Database
ISI
SICI code
0375-9601(199812)250:4-6<223:OUDBLI>2.0.ZU;2-J
Abstract
The quantum formalism permits one to discriminate sometimes between any set of linearly independent pure states with certainty. We obtain the maximum probability with which a set of equally likely, symmetric, linearly indepen dent states can be discriminated. The form of this bound is examined for sy mmetric coherent states of a harmonic oscillator or field mode. (C) 1998 Pu blished by Elsevier Science B.V.