Greenberger-Horne-Zeilinger-type and W-type entangled coherent states: Generation and Bell-type inequality tests without photon counting

Jeong, H. and An, N. B. (2006) Greenberger-Horne-Zeilinger-type and W-type entangled coherent states: Generation and Bell-type inequality tests without photon counting. Physical Review A, 74 2: 022104-022112. doi:10.1103/PhysRevA.74.022104

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ79445_OA.pdf Full text (open access) application/pdf 162.25KB 0

Author Jeong, H.
An, N. B.
Title Greenberger-Horne-Zeilinger-type and W-type entangled coherent states: Generation and Bell-type inequality tests without photon counting
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2006
Sub-type Article (original research)
DOI 10.1103/PhysRevA.74.022104
Open Access Status File (Publisher version)
Volume 74
Issue 2
Start page 022104
End page 022112
Total pages 8
Editor B Crasemann
Place of publication College Pk
Publisher American Physical Soc
Collection year 2006
Language eng
Subject C1
249999 Physical Sciences not elsewhere classified
780102 Physical sciences
Abstract We study Greenberger-Horne-Zeilinger-type (GHZ-type) and W-type three-mode entangled coherent states. Both types of entangled coherent states violate Mermin's version of the Bell inequality with threshold photon detection (i.e., without photon counting). Such an experiment can be performed using linear optics elements and threshold detectors with significant Bell violations for GHZ-type entangled coherent states. However, to demonstrate Bell-type inequality violations for W-type entangled coherent states, additional nonlinear interactions are needed. We also propose an optical scheme to generate W-type entangled coherent states in free-traveling optical fields. The required resources for the generation are a single-photon source, a coherent state source, beam splitters, phase shifters, photodetectors, and Kerr nonlinearities. Our scheme does not necessarily require strong Kerr nonlinear interactions; i.e., weak nonlinearities can be used for the generation of the W-type entangled coherent states. Furthermore, it is also robust against inefficiencies of the single-photon source and the photon detectors.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Macroscopically Distinguishable States
Quantum Entanglement
Phase-space
Nonlocality
Superpositions
Computation
Fields
Q-Index Code C1
Additional Notes doi:10.1103/PhysRevA.74.022104

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2007 Higher Education Research Data Collection
School of Physical Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 70 times in Thomson Reuters Web of Science Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 15 Aug 2007, 08:21:44 EST