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Interferometric Laser Cooling of Atomic Rubidium / Alexander Dunning; Rachel Gregory; James Bateman; Matthew Himsworth; Tim Freegarde

Physical Review Letters, Volume: 115, Issue: 7

Swansea University Author: James, Bateman

Abstract

We report the 1-D cooling of 85Rb atoms using a velocity-dependent optical force based upon Ramsey matter-wave interferometry. Using stimulated Raman transitions between ground hyperfine states, 12 cycles of the interferometer sequence cool a freely-moving atom cloud from 21 μK to 3 μK. This pulsed...

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Published in: Physical Review Letters
ISSN: 0031-9007 1079-7114
Published: American Physical Society (APS) 2015
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa30578
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Abstract: We report the 1-D cooling of 85Rb atoms using a velocity-dependent optical force based upon Ramsey matter-wave interferometry. Using stimulated Raman transitions between ground hyperfine states, 12 cycles of the interferometer sequence cool a freely-moving atom cloud from 21 μK to 3 μK. This pulsed analog of continuous-wave Doppler cooling is effective at temperatures down to the recoil limit; with augmentation pulses to increase the interferometer area, it should cool more quickly than conventional methods, and be more suitable for species that lack a closed radiative transition.
College: College of Science
Issue: 7