Squeezing and entanglement from noisy Gaussian operations

Norbert Schuch; Michael M. Wolf; J. Ignacio Cirac

doi:10.1117/12.609471

23 May 2005 Squeezing and entanglement from noisy Gaussian operations (Invited Paper)

Norbert Schuch, Michael M. Wolf, J. Ignacio Cirac

Proceedings Volume 5842, Fluctuations and Noise in Photonics and Quantum Optics III; (2005) https://doi.org/10.1117/12.609471
Event: SPIE Third International Symposium on Fluctuations and Noise, 2005, Austin, Texas, United States

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.

Citation Download Citation

Norbert Schuch, Michael M. Wolf, and J. Ignacio Cirac "Squeezing and entanglement from noisy Gaussian operations (Invited Paper)", Proc. SPIE 5842, Fluctuations and Noise in Photonics and Quantum Optics III, (23 May 2005); https://doi.org/10.1117/12.609471

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