Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.040402
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Funding
- 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
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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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