Observation of modified radiative properties of cold atoms in vacuum near a dielectric surface

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dc.creatorIvanov, V. V.
dc.creatorCornelussen, R. A.
dc.creatorHeuvell, H. B. van Linden van den
dc.creatorSpreeuw, R. J. C.
dc.date2004-07-12
dc.date2004-08-20
dc.date.accessioned2026-07-07T05:52:14Z
dc.date.available2026-07-07T05:52:14Z
dc.descriptionWe have observed a distance-dependent absorption linewidth of cold $^{87}$Rb atoms close to a dielectric-vacuum interface. This is the first observation of modified radiative properties in vacuum near a dielectric surface. A cloud of cold atoms was created using a magneto-optical trap (MOT) and optical molasses cooling. Evanescent waves (EW) were used to observe the behavior of the atoms near the surface. We observed an increase of the absorption linewidth with up to 25% with respect to the free-space value. Approximately half the broadening can be explained by cavity-quantum electrodynamics (CQED) as an increase of the natural linewidth and inhomogeneous broadening. The remainder we attribute to local Stark shifts near the surface. By varying the characteristic EW length we have observed a distance dependence characteristic for CQED.
dc.description6 pages, 6 figures, some minor revisions
dc.identifierhttps://arxiv.org/abs/physics/0407051
dc.identifierhttp://arxiv.org/abs/physics/0407051
dc.identifierJ. Opt. B: Quantum Semiclass. Opt. 6 (2004) 454-459
dc.identifierdoi:10.1088/1464-4266/6/11/005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/86259
dc.subjectAtomic Physics
dc.subjectQuantum Physics
dc.titleObservation of modified radiative properties of cold atoms in vacuum near a dielectric surface
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