期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.040402
关键词
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资金
- NSF
- Office of Naval Research, AFOSR
- DARPA [W911NF-07-1-0493]
- Division Of Physics
- Direct For Mathematical & Physical Scien [0969731] Funding Source: National Science Foundation
We study density profiles of an ideal Fermi gas and observe Pauli suppression of density fluctuations (atom shot noise) for cold clouds deep in the quantum degenerate regime. Strong suppression is observed for probe volumes containing more than 10 000 atoms. Measuring the level of suppression provides sensitive thermometry at low temperatures. After this method of sensitive noise measurements has been validated with an ideal Fermi gas, it can now be applied to characterize phase transitions in strongly correlated many-body systems.
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