Entanglement creation using quantum interrogation

Gilchrist, A., White, A. G. and Munro, W. J. (2002) Entanglement creation using quantum interrogation. Physical Review A, 66 1: 012106-1-012106-7. doi:10.1103/PhysRevA.66.012106

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Author Gilchrist, A.
White, A. G.
Munro, W. J.
Title Entanglement creation using quantum interrogation
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.66.012106
Open Access Status File (Publisher version)
Volume 66
Issue 1
Start page 012106-1
End page 012106-7
Total pages 7
Editor B. Crasemann
Place of publication New York
Publisher American Physical Society
Collection year 2002
Language eng
Subject C1
240402 Quantum Optics and Lasers
780102 Physical sciences
Abstract We present some applications of high-efficiency quantum interrogation (interaction-free measurement) for the creation of entangled states of separate atoms and of separate photons. The quantum interrogation of a quantum object in a superposition of object-in and object-out leaves the object and probe in an entangled state. The probe can then be further entangled with other objects in subsequent quantum interrogations. By then projecting out those cases in which the probe is left in a particular final state, the quantum objects can themselves be left in various entangled states. In this way, we show how to generate two-, three-, and higher-qubit entanglement between atoms and between photons. The effect of finite efficiency for the quantum interrogation is delineated for the various schemes.
Keyword Optics
Podolsky-Rosen Channels
quantum interrogation
interaction-free measurement
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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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 14 Aug 2007, 17:21:47 EST