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Optique quantique et dynamique de spin dans les microcavités semiconductrices

Abstract : This work is devoted to the study of quantum optics and spin dynamics in a semiconductor microcavity. The optical properties of these devices are described in terms of mixed exciton-photon modes, the cavity polaritons.
First we have studied both theoretically and experimentally four-wave mixing oscillation under resonant excitation by two counterpropagating pump beams with the same linear polarization. The final states of the process have a polarization orthogonal to the pump polarization and are strongly intensity correlated. When the pumps are cross-polarized the process is totally suppressed. This process enables the microcavity to work as an optical binary logical gate.
Then we have generated quantum correlated photons by using four-wave mixing under a one pump resonant excitation in a triple microcavity.
Finally we have investigated the optical spin Hall effect and observed the propagation of excitonic spin currents over more than one hundred microns.
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https://tel.archives-ouvertes.fr/tel-00169855
Contributor : Charles Leyder <>
Submitted on : Thursday, September 6, 2007 - 4:37:40 PM
Last modification on : Thursday, December 10, 2020 - 12:36:55 PM
Long-term archiving on: : Friday, November 25, 2016 - 5:28:24 PM

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  • HAL Id : tel-00169855, version 2

Citation

Charles Leyder. Optique quantique et dynamique de spin dans les microcavités semiconductrices. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2007. Français. ⟨tel-00169855v2⟩

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