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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 17 — Sep. 1, 2006
  • pp: 2628–2630

Nonunity gain quantum nondemolition measurements based on measurement and repreparation

Jessica Schneider, Oliver Glöckl, Gerd Leuchs, and Ulrik L. Andersen  »View Author Affiliations


Optics Letters, Vol. 31, Issue 17, pp. 2628-2630 (2006)
http://dx.doi.org/10.1364/OL.31.002628


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Abstract

We demonstrate experimentally a nonunity gain quantum nondemolition measurement based on a simple homodyne measurement and recreation strategy. Although the output state is an amplified version of the input state, the device meets standard criteria for QND measurements: the transfer coefficient was measured to 1.78, and the conditional variance was measured to 0.66.

© 2006 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.5570) Quantum optics : Quantum detectors
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

History
Original Manuscript: May 15, 2006
Manuscript Accepted: May 25, 2006
Published: August 9, 2006

Citation
Jessica Schneider, Oliver Glöckl, Gerd Leuchs, and Ulrik L. Andersen, "Nonunity gain quantum nondemolition measurements based on measurement and repreparation," Opt. Lett. 31, 2628-2630 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-17-2628


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