Teleportation improvement by conditional measurements on the two-mode squeezed vacuum

Cochrane, P. T., Ralph, T. C. and Milburn, G. J. (2002) Teleportation improvement by conditional measurements on the two-mode squeezed vacuum. Physical Review A, 65 6: 062306-1-062306-6. doi:10.1103/PhysRevA.65.062306

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Author Cochrane, P. T.
Ralph, T. C.
Milburn, G. J.
Title Teleportation improvement by conditional measurements on the two-mode squeezed vacuum
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2002
Sub-type Article (original research)
DOI 10.1103/PhysRevA.65.062306
Open Access Status File (Publisher version)
Volume 65
Issue 6
Start page 062306-1
End page 062306-6
Total pages 6
Editor B. Crasemann
Place of publication College Park
Publisher American Physical Society
Collection year 2002
Language eng
Subject C1
240201 Theoretical Physics
780102 Physical sciences
02 Physical Sciences
Abstract We show that by making conditional measurements on the Einstein-Podolsky-Rosen (EPR) squeezed vacuum [T. Opatrny, G. Kurizki, and D.-G. Welsch, Phys. Rev. A 61, 032302 (2000)], one can improve the efficacy of teleportation for both the position-difference, momentum-sum, and number-difference, phase-sum continuous variable teleportation protocols. We investigate the relative abilities of the standard and conditional EPR states, and show that by conditioning we can improve the fidelity of teleportation of coherent states from below to above the (F) over bar =2/3 boundary, thereby achieving unambiguously quantum teleportation.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Continuous Quantum Variables
States
Entanglement
Information
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
 
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Created: Tue, 14 Aug 2007, 17:16:37 EST