Direct Measurement of Long-Range Third-Order Coherence in Bose-Einstein Condensates

  title={Direct Measurement of Long-Range Third-Order Coherence in Bose-Einstein Condensates},
  author={Sean S. Hodgman and Robert Dall and Andrew Manning and Kenneth G. H. Baldwin and Andrew G. Truscott},
  pages={1046 - 1049}
Correlation of arrival times of metastable helium atoms is consistent with long-range coherence to higher orders. 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… 
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