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Backaction evading measurements for quantum nondemolition detection and quantum optical tapping

Pereira, S. F. and Ou, Z. Y. and Kimble, H. J. (1994) Backaction evading measurements for quantum nondemolition detection and quantum optical tapping. Physical Review Letters, 72 (2). pp. 214-217. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:PERprl94

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Abstract

Backaction evading (BAE) measurements are described for optical parametric amplification with polarization mixing. Quantum correlations between the "signal" and "meter" outputs from the BAE device lead to an observed photocurrent variance 30% (1.5 dB) below the signal shot-noise level and to an inferred variance 44% below the vacuum-state level for determination of the signal field given the meter reading. Together with its efficient information transfer, this BAE detector functions as a quantum optical tap and is suitable for implementing quantum nondemolition detection.


Item Type:Article
Additional Information:©1994 The American Physical Society. Received 13 September 1993. This work was supported by the Office of Naval Research and by the National Science Foundation.
Record Number:CaltechAUTHORS:PERprl94
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:PERprl94
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.72.214
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3889
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Jul 2006
Last Modified:26 Dec 2012 08:56

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