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Source de photons uniques et interférences à un seul photon.
De l'expérience des fentes d'Young au choix retardé.

Abstract : This manuscript is divided in two independant parts.
In the first part, we study the wave-particle duality for a single photon emitted by the triggered photoluminescence of a single NV color center in a diamond nanocrystal. We first present the realization of a single-photon interference experiment using a Fresnel's biprism, in a scheme equivalent to the standard Young's double-slit textbook experiment. We then discuss the complementarity between interference and which-path information in this two-path interferometer. We finally describe the experimental realization of Wheeler's delayed-choice gedanken experiment, which is a fascinating and subtle illustration of wave-particle duality.
The second part of the manuscript is devoted to efficiency improvement of single-photon sources. We first describe the implementation of a new single-photon source based on the photoluminescence of a single nickel-related defect center in diamond. The photophysical properties of such defect make this single-photon source well adapted to open-air quantum cryptography. We finally demonstrate an original method that leads to an improvement of single-molecule photostability at room temperature.
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https://tel.archives-ouvertes.fr/tel-00281163
Contributor : Vincent Jacques <>
Submitted on : Wednesday, May 21, 2008 - 9:24:44 AM
Last modification on : Thursday, November 12, 2020 - 3:34:03 PM
Long-term archiving on: : Friday, May 28, 2010 - 7:44:46 PM

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Vincent Jacques. Source de photons uniques et interférences à un seul photon.
De l'expérience des fentes d'Young au choix retardé.. Physique [physics]. École normale supérieure de Cachan - ENS Cachan, 2007. Français. ⟨tel-00281163⟩

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