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Développement de cavités synchrones et d'une mémoire quantique : des outils pour l'ingénierie quantique hybride.

Martin Bouillard 1 
1 Laboratoire Charles Fabry / Optique Quantique
LCF - Laboratoire Charles Fabry
Abstract : This work is focused on the development of tools for quantum state engineering of non-classical state of light. Three different directions are studied, which when combined, lead to efficient and versatile protocols towards the generation of quantum states. Those states are produced by taking advantage of both descriptions of the light: the discrete and continuous variables of the light.The first direction consists in the réalisation of arbitrary superpositions of zero and two-photon Fock states with two indistinguishable single-photon states. This protocol permits, among others, to create superpositions of coherent states called Schrödinger cat states. An iteration of the protocol could allow the growth of the amplitude of the state.To realize such iteration, we increase the production rate of our basic resource, namely, the single photon.To do so, we implement two synchronous cavities allowing the increase of the peak power of the laser pulses, which ultimately enhanced the non-linear effect at the origin of the photon creation.The last direction aims to solve the problems related to the probabilistic nature of the photon creation. In order to store and extract the single photons on demand, a quantum memory is implemented. The storage of single and two-photon states has been experimentally realized. This setup could allow in the near future, by synchronizing the state stored in the cavity with the income of another photon, to create a cat state inside the cavity itself.
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Submitted on : Wednesday, February 14, 2018 - 2:10:07 PM
Last modification on : Saturday, June 25, 2022 - 10:29:34 PM
Long-term archiving on: : Monday, May 7, 2018 - 1:14:02 PM


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  • HAL Id : tel-01709020, version 1


Martin Bouillard. Développement de cavités synchrones et d'une mémoire quantique : des outils pour l'ingénierie quantique hybride.. Optique [physics.optics]. Université Paris Saclay (COmUE), 2017. Français. ⟨NNT : 2017SACLO012⟩. ⟨tel-01709020⟩



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