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Réalisation expérimentale de sources de photons uniques, caractérisation et application à la cryptographie quantique

Abstract : A single photon source is an emitter that is able to produce light plses containing exactly one photon. We present the work related to the experimental realisation and the statistical characterisation of single photon sources of two kinds : * Triggerred single photon sources, based on the temporal control of a single fluorescent emitter. We used single molecules and single NV coloured centres of diamond as single emitters. * Sources of heralded single photons, based on the conditionnal preparation of one-photon states, obtained from photon pairs produced by parametric down-conversion in a non-linear crystal. Two of the single photon sources we have realised have been used in experimental quantum key distribution test-beds. The measured experimental performances indicate that a potential gain can be obtained bu using a single photon source instead of weak coherent pulses.
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https://tel.archives-ouvertes.fr/tel-00008985
Contributor : Romain Alléaume <>
Submitted on : Friday, April 8, 2005 - 7:05:48 PM
Last modification on : Monday, February 15, 2021 - 10:47:09 AM
Long-term archiving on: : Friday, April 2, 2010 - 9:51:28 PM

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  • HAL Id : tel-00008985, version 1

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Romain Alléaume. Réalisation expérimentale de sources de photons uniques, caractérisation et application à la cryptographie quantique. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2004. Français. ⟨tel-00008985⟩

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