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Direct measurement of long-range third-order coherence in Bose-Einstein condensates.
MedLine Citation:
PMID:  21350171     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A major advance in understanding the behavior of light was to describe the coherence of a light source by using correlation functions that define the spatio-temporal relationship between pairs and larger groups of photons. Correlations are also a fundamental property of matter. We performed simultaneous measurement of the second- and third-order correlation functions for atoms. Atom bunching in the arrival time for pairs and triplets of thermal atoms just above the Bose-Einstein condensation (BEC) temperature was observed. At lower temperatures, we demonstrated conclusively the long-range coherence of the BEC for correlation functions to third order, which supports the prediction that like coherent light, a BEC possesses long-range coherence to all orders.
Authors:
S S Hodgman; R G Dall; A G Manning; K G H Baldwin; A G Truscott
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  331     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-02-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1046-9     Citation Subset:  IM    
Affiliation:
Australian Research Council Centre of Excellence for Quantum Atom Optics, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia.
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