A PROBABILISTIC CLONING MACHINE FOR REPLICATING 2 NONORTHOGONAL STATES

Authors
DUAN LM GUO GC
Citation
Lm. Duan et Gc. Guo, A PROBABILISTIC CLONING MACHINE FOR REPLICATING 2 NONORTHOGONAL STATES, Physics letters. A, 243(5-6), 1998, pp. 261-264
Citations number
18
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
243
Issue
5-6
Year of publication
1998
Pages
261 - 264
Database
ISI
SICI code
0375-9601(1998)243:5-6<261:APCMFR>2.0.ZU;2-Q
Abstract
We show that two non-orthogonal states secretly chosen from a certain set $ = {\Psi(0)], \Psi(1)]} can be faithfully cloned in a probabilist ic fashion through a unitary evolution together with a measurement. Th e probability of success (called the cloning efficiency) can not attai n 100%. We derive a basic inequality on the cloning efficiencies. (C) 1998 Elsevier Science B.V.