Optique quantique multimode avec des peignes de fréquence

Abstract : Femtosecond lasers are an incredible precision resource for metrology. The ability to produce squeezed states in this regime could then improve even more physical measurements. In a first part, I will present a precision limit for the estimation of parameters carried by the electromagnetic field, using general gaussian resources. It can be proven that a single-mode squeezer, on a well defined mode, is optimal from an experimental point of view. I will then exhibit a simple general scheme, based on homodyne detection, which allows to optimally measure parameters carried by the EM field. In the second part, I will present the experimental results we obtained using a femtosecond synchronously pumped optical parametric oscillator. I will demonstrate the production of intensity squeezing in that regime and the proof of the multimode aspect of the light produced. This is a crucial step in the production of tailored multimode squeezed states in the femtosecond regime.
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Quantum Physics [quant-ph]. Université Pierre et Marie Curie - Paris VI, 2010. French


https://tel.archives-ouvertes.fr/tel-00654841
Contributor : Olivier Pinel <>
Submitted on : Friday, December 23, 2011 - 12:44:12 PM
Last modification on : Monday, December 26, 2011 - 12:32:00 PM

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  • HAL Id : tel-00654841, version 1

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Olivier Pinel. Optique quantique multimode avec des peignes de fréquence. Quantum Physics [quant-ph]. Université Pierre et Marie Curie - Paris VI, 2010. French. <tel-00654841>

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