| Autor: |
Hodgman SS; Australian Research Council Centre of Excellence for Quantum Atom Optics, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia., Dall RG, Manning AG, Baldwin KG, Truscott AG |
| Jazyk: |
angličtina |
| Zdroj: |
Science (New York, N.Y.) [Science] 2011 Feb 25; Vol. 331 (6020), pp. 1046-9. |
| DOI: |
10.1126/science.1198481 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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