Suppression of Density Fluctuations in a Quantum Degenerate Fermi Gas

被引：96

作者：

Sanner, Christian ^{[1
]}

Su, Edward J.

Keshet, Aviv

Gommers, Ralf

Shin, Yong-Il

Huang, Wujie

Ketterle, Wolfgang

机构：

[1] MIT, MIT Harvard Ctr Ultracold Atoms, Elect Res Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 04期

基金：

美国国家科学基金会;

关键词：

HANBURY-BROWN; COLLISIONS;

D O I：

10.1103/PhysRevLett.105.040402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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