Quantum Degenerate Dipolar Fermi Gas

被引：357

作者：

Lu, Mingwu ^{[1
,2
,3
]}

Burdick, Nathaniel Q. ^{[1
,2
,3
]}

Lev, Benjamin L. ^{[2
,3
,4
]}

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[2] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[3] Stanford Univ, EL Ginzton Lab, Stanford, CA 94305 USA

[4] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 21期

基金：

美国国家科学基金会;

关键词：

PHYSICS;

D O I：

10.1103/PhysRevLett.108.215301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first quantum degenerate dipolar Fermi gas, the realization of which opens a new frontier for exploring strongly correlated physics and, in particular, quantum liquid crystalline phases. A quantum degenerate Fermi gas of the most magnetic atom Dy-161 is produced by laser cooling to 10 mu K before sympathetically cooling with ultracold, bosonic Dy-162. The temperature of the spin-polarized Dy-161 is a factor T/T-F = 0.2 below the Fermi temperature T-F = 300 nK. The cotrapped Dy-162 concomitantly cools to approximately T-c for Bose-Einstein condensation, thus realizing a novel, nearly quantum degenerate dipolar Bose-Fermi gas mixture. Additionally, we achieve the forced evaporative cooling of spin-polarized Dy-161 without Dy-162 to T/T-F = 0.7. That such a low temperature ratio is achieved may be a first signature of universal dipolar scattering.

引用

页数：5

共 34 条

[1] Sub-Doppler laser cooling and magnetic trapping of erbium [J].

Berglund, Andrew J. ;

Lee, Siu Au ;

McClelland, Jabez J. .

PHYSICAL REVIEW A, 2007, 76 (05)

[2] Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms [J].

Berglund, Andrew J. ;

Hanssen, James L. ;

McClelland, Jabez J. .

PHYSICAL REVIEW LETTERS, 2008, 100 (11)

[3] Bond Order Solid of Two-Dimensional Dipolar Fermions [J].

Bhongale, S. G. ;

Mathey, L. ;

Tsai, Shan-Wen ;

Clark, Charles W. ;

Zhao, Erhai .

PHYSICAL REVIEW LETTERS, 2012, 108 (14)

[4] Many-body physics with ultracold gases [J].

Bloch, Immanuel ;

Dalibard, Jean ;

Zwerger, Wilhelm .

REVIEWS OF MODERN PHYSICS, 2008, 80 (03) :885-964

[5] Quasi-universal dipolar scattering in cold and ultracold gases [J].

Bohn, J. L. ;

Cavagnero, M. ;

Ticknor, C. .

NEW JOURNAL OF PHYSICS, 2009, 11

[6]

Burdick N. Q., UNPUB

[7] Simultaneous magneto-optical trapping of bosonic and fermionic chromium atoms [J].

Chicireanu, R. ;

Pouderous, A. ;

Barbe, R. ;

Laburthe-Tolra, B. ;

Marechal, E. ;

Vernac, L. ;

Keller, J. -C. ;

Gorceix, O. .

PHYSICAL REVIEW A, 2006, 73 (05)

[8] Long-Lived Dipolar Molecules and Feshbach Molecules in a 3D Optical Lattice [J].

Chotia, Amodsen ;

Neyenhuis, Brian ;

Moses, Steven A. ;

Yan, Bo ;

Covey, Jacob P. ;

Foss-Feig, Michael ;

Rey, Ana Maria ;

Jin, Deborah S. ;

Ye, Jun .

PHYSICAL REVIEW LETTERS, 2012, 108 (08)

[9] Trimer Liquids and Crystals of Polar Molecules in Coupled Wires [J].

Dalmonte, M. ;

Zoller, P. ;

Pupillo, G. .

PHYSICAL REVIEW LETTERS, 2011, 107 (16)

[10] Onset of Fermi degeneracy in a trapped atomic gas [J].

DeMarco, B ;

Jin, DS .

SCIENCE, 1999, 285 (5434) :1703-1706

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