A robust verification of the quantum nature of light

Authors
Citation
Mga. Paris, A robust verification of the quantum nature of light, PHYS LETT A, 289(4-5), 2001, pp. 167-171
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
0375-9601 → ACNP
Volume
289
Issue
4-5
Year of publication
2001
Pages
167 - 171
Database
ISI
SICI code
0375-9601(20011022)289:4-5<167:ARVOTQ>2.0.ZU;2-T
Abstract
We present a conditional experiment involving a parametric amplifier and an avalanche photodetector to generate highly nonclassical states of the radi ation field. The nonclassicality is robust against amplifier gain, detector efficiency and dark counts. At the output all the generalized Wigner funct ions have negative values, and this is exploited in order to reveal the non classicality through quantum homodyne tomography. (C) 2001 Elsevier Science B.V. All rights reserved.