Matterwave interferometric velocimetry of cold Rb atoms

Carey, Max; Belal, Mohammad; Himsworth, Matthew; Bateman, James; Freegarde, Tim. 2018 Matterwave interferometric velocimetry of cold Rb atoms. Journal of Modern Optics, 65 (5-6). 657-666. 10.1080/09500340.2017.1397222

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Abstract/Summary

We consider the matterwave interferometric measurement of atomic velocities, which forms a building block for all matterwave inertial measurements. A theoretical analysis, addressing both the laboratory and atomic frames and accounting for residual Doppler sensitivity in the beamsplitter and recombiner pulses, is followed by an experimental demonstration, with measurements of the velocity distribution within a 20 μK cloud of rubidium atoms. Our experiments use Raman transitions between the long-lived ground hyperfine states, and allow quadrature measurements that yield the full complex interferometer signal and hence discriminate between positive and negative velocities. The technique is most suitable for measurement of colder samples.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1080/09500340.2017.1397222
ISSN:	0950-0340
Date made live:	12 Nov 2019 14:50 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/525805

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