Towards surface quantum optics with Bose-Einstein condensates in evanescent waves
Quantum Physics
2015-05-13 v1
Abstract
We present a surface trap which allows for studying the coherent interaction of ultracold atoms with evanescent waves. The trap combines a magnetic Joffe trap with a repulsive evanescent dipole potential. The position of the magnetic trap can be controlled with high precision which makes it possible to move ultracold atoms to the surface of a glass prism in a controlled way. The optical potential of the evanescent wave compensates for the strong attractive van der Waals forces and generates a potential barrier at only a few hundred nanometers from the surface. The trap is tested with Rb Bose-Einstein condensates (BEC), which are stably positioned at distances from the surfaces below one micrometer.
Cite
@article{arxiv.0811.4517,
title = {Towards surface quantum optics with Bose-Einstein condensates in evanescent waves},
author = {Helmar Bender and Philippe Courteille and Claus Zimmermann and Sebastian Slama},
journal= {arXiv preprint arXiv:0811.4517},
year = {2015}
}