Optical interface created by laser-cooled atoms trapped in the evanescent field surrounding an optical nanofiber

Details Optical interface created by laser-cooled atoms trapped in the evanescent field surrounding an optical nanofiber Optical interface created by laser-cooled atoms trapped in the evanescent field surrounding an optical nanofiber

2009-12-07

arxiv.org/abs/0912.1179v2

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.104.203603

Trapping and optically interfacing laser-cooled neutral atoms is an essential requirement for their use in advanced quantum technologies. Here we simultaneously realize both of these tasks with cesium atoms interacting with a multi-color evanescent field surrounding an optical nanofiber. The atoms are localized in a one-dimensional optical lattice about 200 nm above the nanofiber surface and can be efficiently interrogated with a resonant light field sent through the nanofiber. Our technique opens the route towards the direct integration of laser-cooled atomic ensembles within fiber networks, an important prerequisite for large scale quantum communication schemes. Moreover, it is ideally suited to the realization of hybrid quantum systems that combine atoms with, e.g., solid state quantum devices.

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