Quantum correlations and atomic speckle

Sean Hodgman, Robert Dall, Andrew Manning, Mattias Johnsson, Kenneth Baldwin, Andrew Truscott

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    Here we utilize the single-atom detection capability of metastable helium to measure the second-order and third-order correlation functions for ensembles of ultracold atoms. We then extend these measurements to characterize the quantum statistics of atoms guided in a dipole potential. By appropriately loading atoms into the guide we are able to populate a selected number of guided modes, ranging from the majority of atoms in the lowest order mode (a BEC), to multi-mode guiding (equivalent to a thermal source). The guided BEC was characterised by a smooth gaussian transverse spatial profile, and a second-order correlation value of unity consistent with a coherent source. For multi-mode guiding, the matter-wave equivalent of speckle was observed. Furthermore, at short arrival times, the second-order correlation function was greater than unity, corresponding to atom bunching characteristic of an incoherent (thermal) source.
    Original languageEnglish
    Title of host publicationLaser Spectroscopy - ICOLS 2011: Proceedings of the 20th International Conference
    EditorsWolfgang Ertmer, Rüdiger Scholz
    Place of PublicationBerlin Germany
    PublisherLogos Verlag Berlin
    ISBN (Print)9783832529932
    Publication statusPublished - 2011
    Event20th International Conference on Laser Spectroscopy (ICOLS 2011) - Aerzen Germany
    Duration: 1 Jan 2011 → …


    Conference20th International Conference on Laser Spectroscopy (ICOLS 2011)
    Period1/01/11 → …
    OtherMay 30-June 3 2011
    Internet address


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