@article{2007-sague-rauschenbeutel-phys-rev-lett-v99-p163602, Abstract = {The strong evanescent field around ultrathin unclad optical fibers bears a high potential for detecting, trapping, and manipulating cold atoms. Introducing such a fiber into a cold-atom cloud, we investigate the interaction of a small number of cold cesium atoms with the guided fiber mode and with the fiber surface. Using high resolution spectroscopy, we observe and analyze light-induced dipole forces, van der Waals interaction, and a significant enhancement of the spontaneous emission rate of the atoms. The latter can be assigned to the modification of the vacuum modes by the fiber.}, Author = {Sagué, G. AND Vetsch, E. AND Alt, W. AND Meschede, D. AND Rauschenbeutel, A.}, Journal = {Phys. Rev. Lett.}, Pages = {163602}, Title = {{Cold-Atom Physics Using Ultrathin Optical Fibers: Light-Induced Dipole Forces and Surface Interactions}}, Volume = {99}, Year = {2007} }