2 EXAMPLES OF MEASUREMENT PROCESSES ILLUSTRATING HELSTROM OPTIMUM DECISION BOUND

Authors
SASAKI M HIROTA O
Citation
M. Sasaki et O. Hirota, 2 EXAMPLES OF MEASUREMENT PROCESSES ILLUSTRATING HELSTROM OPTIMUM DECISION BOUND, Physics letters. A, 210(1-2), 1996, pp. 21-25
Citations number
8
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
210
Issue
1-2
Year of publication
1996
Pages
21 - 25
Database
ISI
SICI code
0375-9601(1996)210:1-2<21:2EOMPI>2.0.ZU;2-2
Abstract
Helstrom's decision bound for non-orthogonal quantum states can be rea lized by simple physical measurements after an adequate unitary transf ormation applied to the signal states. Two examples are used to demons trate its structure. One is a two-level atomic system, another is a bi nary coherent signal system. The unitary transformation required in th e latter case provides a new problem for quantum optics.