Student Seminar

Ultra-cooling atoms

Friday, 23 October 2020 01:30PM PDT
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Student Seminar

Mehdi Pourzand
Department of Physics, SFU

Ultra-cooling atoms

Oct 23, 2020 at 1:30pm in online

Synopsis

In this presentation, I’ll talk about an apparatus capable of cooling an atomic cloud from room temperature to temperatures on the order of nano-kelvins. The cooling process consists of 2 stages. The first stage is a magneto-optical trap (MOT) in which atoms are trapped and laser cooled to micro-kelvin temperatures. After intermediate steps of compressed MOT, optical pumping, and magnetically trapping, the atoms are moved to the 2nd stage of cooling. In this 2nd stage, atoms are trapped in a Ioffe-Pritchard trap and are evaporatively cooled to nano-kelvin temperatures. At the end, I’ll show an example of the kinds of experiment that we do with this system at SFU.