1 December 2007 Design of microcavity resonators for single-atom detection
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Whispering gallery modes of a microdisk resonator are useful for the optical detection of single rubidium and cesium atoms near the surface of a substrate. Light is coupled into two high-Q whispering-gallery modes of the disk which can provide attractive and/or repulsive potentials, respectively, via their evanescent fields. The sum potential, including van der Waals/Casimir-Polder surface forces, may be tuned to exhibit a minimum at distances on the order of 100 nm from the disk surface. Simultaneously optically trapping and detecting is possible, with the back-action of an atom held in this trap on the light fields being suffciently strong to provide a measurable effect. Atom trapping and detection depend on a variety of system parameters and experimental realizations differ for different atoms.
Michael Rosenblit, Michael Rosenblit, Peter Horak, Peter Horak, Eyal Fleminger, Eyal Fleminger, Yonathan Japha, Yonathan Japha, Ron Folman, Ron Folman, "Design of microcavity resonators for single-atom detection," Journal of Nanophotonics 1(1), 011670 (1 December 2007). https://doi.org/10.1117/1.2835450 . Submission:

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