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Proceedings Paper

Squeezing and entanglement from noisy Gaussian operations
Author(s): Norbert Schuch; Michael M. Wolf; J. Ignacio Cirac
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Paper Abstract

We investigate the creation of squeezing via operations subject to noise and losses and ask for the optimal use of such devices when supplemented by noiseless passive operations. Both, single and repeated uses of the device are optimized and it is proven that in the latter case the squeezing converges exponentially fast to its asymptotic optimum, which we determine explicitly. For the case of multiple iterations we show that the optimum can be achieved with fixed intermediate passive operations. Finally, we relate the results to the generation of entanglement and derive the maximal two-mode entanglement achievable within the considered scenario.

Paper Details

Date Published: 23 May 2005
PDF: 7 pages
Proc. SPIE 5842, Fluctuations and Noise in Photonics and Quantum Optics III, (23 May 2005); doi: 10.1117/12.609471
Show Author Affiliations
Norbert Schuch, Max-Planck-Institut fuer Quantenoptik (Germany)
Michael M. Wolf, Max-Planck-Institut fuer Quantenoptik (Germany)
J. Ignacio Cirac, Max-Planck-Institut fuer Quantenoptik (Germany)

Published in SPIE Proceedings Vol. 5842:
Fluctuations and Noise in Photonics and Quantum Optics III
Philip R. Hemmer; Julio R. Gea-Banacloche; Peter Heszler; M. Suhail Zubairy, Editor(s)

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