Double and negative reflection of cold atoms in non-Abelian gauge potentials

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dc.creatorJuzeliunas, Gediminas
dc.creatorRuseckas, Julius
dc.creatorJacob, Andreas
dc.creatorSantos, Luis
dc.creatorOhberg, Patrik
dc.date2008-01-14
dc.date2008-05-27
dc.date.accessioned2026-07-07T09:40:45Z
dc.date.available2026-07-07T09:40:45Z
dc.descriptionAtom reflection is studied in the presence of a non-Abelian vector potential proportional to a spin-1/2 operator. The potential is produced by a relatively simple laser configuration for atoms with a tripod level scheme. We show that the atomic motion is described by two different dispersion branches with positive or negative chirality. As a consequence of that, atom reflection shows unusual features, since an incident wave may split into two reflected ones at a barrier, an ordinary specular reflection, and an additional non-specular one. Remarkably, the latter wave can exhibit negative reflection and may become evanescent if the angle of incidence exceeds a critical value. These reflection properties are crucial for future designs in non-Abelian atom optics.
dc.description5 figures corrected references
dc.identifierhttps://arxiv.org/abs/0801.2056
dc.identifierhttp://arxiv.org/abs/0801.2056
dc.identifierPhys. Rev. Lett. 100, 200405 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.200405
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161587
dc.subjectOther Condensed Matter
dc.subjectAtomic Physics
dc.subjectQuantum Physics
dc.titleDouble and negative reflection of cold atoms in non-Abelian gauge potentials
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