Comparing thermal and lasing atomic sources for precision inertial measurement

J E Debs, P. A. Altin, T H Barter, D. Döring, G R Dennis, G McDonald, Nicholas Peter Robins, John David Close, R. P. Anderson

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    1 Citation (Scopus)

    Abstract

    We compare the sensitivity of an interferometric measurement of gravity using a freely-falling, lasing atomic source to that achieved with a cold, thermal atomic source. We observe a higher fringe visibility with the lasing source, also the highest yet observed in such a configuration. We improve sensitivity by exploiting large momentum transfer beamsplitting (LMT), and discuss briefly the advantages of using a lasing atomic source for LMT. Most importantly, we measure no degradation of the sensitivity of our interferometer due to interaction induced dephasing at our limit of precision. Using a simple model, we verify this observation and project to beyond state-of-the-art sensitivities, concluding that with reasonable experimental parameters, interaction induced dephasing will not limit the sensitivity of inertial measurements using freely-falling, lasing atomic sources.

    Original languageEnglish
    Title of host publicationInternational Quantum Electronics Conference (IQEC 2011) and Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR 2011)
    Subtitle of host publicationIncorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology: Sydney, Australia, 28 August – 1 September 2011
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Pages2082-2084
    Number of pages3
    ISBN (Print)9780977565771
    DOIs
    Publication statusPublished - 2011
    EventInternational Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011 - Sydney Convention and Exhibition Centre, Sydney, Australia
    Duration: 28 Aug 20111 Sept 2011
    https://www.osapublishing.org/conference.cfm?meetingid=89&yr=2011 (Proceedings)

    Conference

    ConferenceInternational Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011
    Abbreviated titleIQEC/CLEO-PR 2011
    Country/TerritoryAustralia
    CitySydney
    Period28/08/111/09/11
    OtherJoint-held conference
    Internet address

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