Atom trapping and guiding with a subwavelength-diameter optical fiber

Details Atom trapping and guiding with a subwavelength-diameter optical fiber Atom trapping and guiding with a subwavelength-diameter optical fiber

2004-04-23

arxiv.org/abs/physics/0404110v1

Physics

Optics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevA.70.011401

We suggest using an evanescent wave around a thin fiber to trap atoms. We show that the gradient force of a red-detuned evanescent-wave field in the fundamental mode of a silica fiber can balance the centrifugal force when the fiber diameter is about two times smaller than the wavelength of the light and the component of the angular momentum of the atoms along the fiber axis is in an appropriate range. As an example, the system should be realizable for Cesium atoms at a temperature of less than 0.29 mK using a silica fiber with a radius of 0.2 $\mu$m and a 1.3-$\mu$m-wavelength light with a power of about 27 mW.

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