Ultracold fermions trapped in nanostructured lattices

Abstract : Ultra-cold atoms systems used as quantum simulators offer an alternative way to simulate many-body systems behaviour in condensed matter. Indeed, we can create artificial matter with optical lattices : the stationnary wave reproduces the potential wells in the crystalline structure. Moreover, the big advantage of using cold atoms is that the parameters of the simulated crystal can be well controlled so that we can understand the electrical and magnetism properties of the condensed matter such as conductivity, ferromagnetism ...The common approach for generating optical lattices is interfering two laser beams in one dimension. The lattice spacing is limited by the interfringe, which is half the wavelength. However, the more the lattice spacing decreases, the more the interaction energies increase [3].In the new ongoing project, we are going to produce subwavelength lattices by irradiating a nanostructure gold layer. The subwavelength potential is got thanks to the control of the interactions between the beams, the atomic cloud, and the nanostructured surface. This system will be able to study new interaction regimes with very high tunability (different lattice geometries, impurities...).
Type de document :
Autre publication
Séminaire organisé par le laboratoire LP2N (Talence) le 15 février 2017. 2017
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https://hal.archives-ouvertes.fr/hal-01585120
Contributeur : Caroline Busquet <>
Soumis le : lundi 11 septembre 2017 - 11:04:50
Dernière modification le : jeudi 11 janvier 2018 - 06:27:18

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  • HAL Id : hal-01585120, version 1

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Caroline Busquet, Maxime Bellouvet, Simon Bernon, Philippe Bouyer. Ultracold fermions trapped in nanostructured lattices. Séminaire organisé par le laboratoire LP2N (Talence) le 15 février 2017. 2017. 〈hal-01585120〉

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