Simultaneous optical trapping and detection of atoms by microdisk resonators

Details Simultaneous optical trapping and detection of atoms by microdisk resonators Simultaneous optical trapping and detection of atoms by microdisk resonators

2006-01-23

arxiv.org/abs/quant-ph/0601154v1

Phys. Rev. A 73, 063805 (2006)

Physics

Quantum Physics

13 pages, 16 figures

Scientific paper

10.1103/PhysRevA.73.063805

We propose a scheme for simultaneously trapping and detecting single atoms near the surface of a substrate using whispering gallery modes of a microdisk resonator. For efficient atom-mode coupling the atom should be placed within approximately 150 nm from the disk. We show that a combination of red and blue detuned modes can form an optical trap at such distances while the back-action of the atom on the field modes can simultaneously be used for atom detection. We investigate these trapping potentials including van-der-Waals and Casimir-Polder forces and discuss corresponding atom detection efficiencies, depending on a variety of system parameters. Finally, we analyze the feasibility of non-destructive detection.

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