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Oscillation paramétrique optique et génération de photons jumeaux dans des microcavités de semiconducteurs

Abstract : This work is devoted to the study of optical parametric oscillation and quantum correlations in planar semiconductor microcavities.
In these systems, a strong light-matter coupling results in new eigenstates, which are mixed exciton-photon states, the microcavity polaritons. Nonlinear effects such as optical parametric oscillation become possible. However, important drawbacks prevent potential applications in quantum optics: the strong coupling condition (limited operating temperature) and the pump injection at a specific angle (impossible electrical injection).
We are interested in structures which circumvent these difficulties:
- wire-shaped microcavities, where the electric field quantization gives rise to a multiplet of polariton modes;
- original triple microcavities structures, where the optical coupling between the three cavities naturally provides a triple resonance for the parametric frequencies.
By angle resolved spectroscopy experiments, we observe interbranches parametric processes well adapted to an electrical injection. The pump is at 0 degree and the signal and idler beams can be collected at 0 degree or at opposite angles. The strong coupling constraint disappears in the triple microcavity, allowing an increase of the operating temperature.
Finally, we study a configuration in which the signal and idler beams are spatially separated with equal intensities. By quantum noise measurements, we show that these beams are quantum correlated.
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Contributor : Carole Diederichs <>
Submitted on : Wednesday, January 23, 2008 - 5:37:46 PM
Last modification on : Monday, December 14, 2020 - 9:47:08 AM
Long-term archiving on: : Thursday, September 27, 2012 - 5:40:04 PM

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  • HAL Id : tel-00178362, version 1

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Carole Diederichs. Oscillation paramétrique optique et génération de photons jumeaux dans des microcavités de semiconducteurs. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2007. Français. ⟨tel-00178362⟩

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