Schlieren imaging of nano-scale atom-surface inelastic transition using a Fresnel biprism atom interferometer |
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Authors: | J. Grucker J. Baudon F. Perales G. Dutier V. Bocvarski J.-C. Karam G. Vassilev M. Ducloy |
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Affiliation: | (1) Laboratoire de Physique des Lasers (CNRS-UMR 7538), Université Paris 13, 99 avenue J.B. Clément, 93430 Villetaneuse, France;(2) Institute of Physics - Belgrade, PO box 57, Pregrevica 118, 11080 Zemun, Serbia |
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Abstract: | Surface-induced exo-energetic inelastic transitions among atomic Zeeman states in a magnetic field (“van der Waals – Zeeman” transitions) are useable as tuneable beam splitters. A transversally coherent atom beam impinging a pair of opposite surfaces (e.g. 2 edges of a slit or of an ensemble of periodic slits) gives rise to two coherently diffracted wave packets. Within the wave packet overlap, non-localised interference fringes of the Young-slit type are predicted. From the diffraction pattern observed in the Fraunhofer regime (Schlieren image), detailed information about the transition amplitude on a scale of a few nanometers should be derived. |
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Keywords: | 03.75.Be Atom and neutron optics 37.25.+k Atom interferometry techniques 34.-35.+a Interactions and atom-molecule potentials and forces |
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