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Interferometry with guided atoms and multi-photon laser cooling and trapping

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If you have a question about this talk, please contact Vincent Boyer.

I will talk about progresses in two experiments: First I will present our efforts toward precision interferometry with atoms confined in a magnetic guide. As a variation of trapped atom spectroscopy, the major difficulty in guided atom interferometry is to overcome various dephasing effects associated with the atomic guiding potential. For this purpose we developed novel light-pulse atom interferometry schemes and designed novel atom guiding structures. I will discuss our results in realizing a guided atom gyroscope, measuring of the atomic recoil frequency, as well as investigating guided matter-wave fidelity decay in a time-dependent potential that is classically chaotic. Secondly, I will discuss our recent demonstration of multi-photon (multiple wavelength) laser cooling and trapping of cesium. Instead of using just the traditional single cycling transition, we add additional lasers that couple only excited states, providing cooling that depends on two- and three-photon absorption. Possible application of similar techniques to laser cooling of (anti)hydrogen and diatomic molecules may be discussed in the end if time is allowed.

This talk is part of the Cold Atoms series.

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