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25 April 2024 |
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A Degenerate Bose-Fermi Mixture of Metastable Atoms | | J. M. McNamara
; T. Jeltes
; A. S. Tychkov
; W. Hogervorst
; W. Vassen
; | | Date: |
25 Jun 2006 | | Subject: | Statistical Mechanics | | Abstract: | We report the observation of simultaneous quantum degeneracy in a dilute gaseous Bose-Fermi mixture of metastable atoms. Sympathetic cooling of helium-3 (fermion) by helium-4 (boson), both in the lowest triplet state, allows us to produce ensembles containing more than 10^6 atoms of each isotope at temperatures below 1 micro-Kelvin, and achieve a fermionic degeneracy parameter of T/Tf=0.45. Due to their high internal energy, the detection of individual metastable atoms with sub-nanosecond time resolution is possible, permitting the study of bosonic and fermionic quantum gases with unprecedented precision. This may lead to metastable helium becoming the mainstay of quantum atom optics. | | Source: | arXiv, cond-mat/0606638 | | Services: | Forum | Review | PDF | Favorites | |
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