Quantum correlations and atomic speckle

S. S. Hodgman*, R. G. Dall, A. G. Manning, M. T. Johnsson, K. G H Baldwin, A. G. Truscott

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

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 publicationICOLS 2011
Subtitle of host publicationProceedings of the 20th International Conference on Laser Spectroscopy
EditorsWolfgang Ertmer, Rüdiger Scholz
Place of PublicationBerlin
PublisherLogos Verlag Berlin
Pages231-239
Number of pages9
ISBN (Electronic)9783832529932, 3832529934
Publication statusPublished - 2011
Externally publishedYes
Event20th International Conference on Laser Spectroscopy, ICOLS 2011 - Hannover, Germany
Duration: 30 May 20113 Jun 2011

Other

Other20th International Conference on Laser Spectroscopy, ICOLS 2011
CountryGermany
CityHannover
Period30/05/113/06/11

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Hodgman, S. S., Dall, R. G., Manning, A. G., Johnsson, M. T., Baldwin, K. G. H., & Truscott, A. G. (2011). Quantum correlations and atomic speckle. In W. Ertmer, & R. Scholz (Eds.), ICOLS 2011: Proceedings of the 20th International Conference on Laser Spectroscopy (pp. 231-239). Berlin: Logos Verlag Berlin.