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Theses

Optique quantique multimode : des images aux impulsions

Abstract : This thesis is devoted to the theoretical and experimental study of multimode optical parametric oscillators (OPO) in the transverse and longitudinal domains. We first recall the common tools used to operate non-classical states of light, with a special emphasis on the concept of mode in the quantum description of the electromagnetic field. We recall the techhniques used to describe and manipulate experimentally the transverse (images) and longitudinal (pulses) modes, and compare the two cases. A certain number of analog variables arises, which can help transpose concepts from one domain to the other. We develop a general model for multimode OPOs, centered on the multimode description of the non-linear interaction in a parametric crystal. This lead to the possibility of generating multimode non-classical states, and can be applied for transverse or longitudinal multimode OPO. The theoretical developments are linked to several experiments achieved in this thesis. The first one is a study of the transmission and frequency doubling of images in a self-imaging cavity. Two different quantum imaging experiments are decribed: the first one is the generation of multimode squeezing in an OPO above threshold and the second one uses an OPO in a self-imaging cavity to produce image amplification and multimode squeezing. Finally, we describe the new experimental setup of a synchronously pumped OPO (SPOPO) which leads to the squeezing of a frequency comb.
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https://tel.archives-ouvertes.fr/tel-00431648
Contributor : Benoît Chalopin <>
Submitted on : Thursday, November 12, 2009 - 4:45:56 PM
Last modification on : Thursday, December 10, 2020 - 12:37:02 PM
Long-term archiving on: : Thursday, June 17, 2010 - 6:07:26 PM

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  • HAL Id : tel-00431648, version 1

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Benoît Chalopin. Optique quantique multimode : des images aux impulsions. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2009. Français. ⟨tel-00431648⟩

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