Sympathetic cooling of 85Rb and 87Rb -: art. no. 021402

被引：57

作者：

Bloch, I

Greiner, M

Mandel, O

Hänsch, TW

Esslinger, T

机构：

[1] Univ Munich, Sekt Phys, D-80799 Munich, Germany

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[3] Univ Florence, Dept Phys, Florence, Italy

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.64.021402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate sympathetic cooling between magnetically trapped Rb-85 and Rb-87 atoms. Up to 6 x 10(6) Rb-85 atoms are cooled via elastic collisions with a reservoir of 8 x 10(8) Rb-87 atoms. The temperature of the binary atomic ensemble is adjusted by using radio-frequency evaporation of Rb-87. Temperatures as low as T = 100 nK have been realized in the binary ensemble. Through a cross-dimensional mixing approach we have been able to measure the interspecies Rb-87-Rb-85 scattering cross section sigma = 1.52(34) x 10(-15) m(2).

引用

收藏

页数：4

相关论文

共 29 条

[1] OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].

ANDERSON, MH ;

ENSHER, JR ;

MATTHEWS, MR ;

WIEMAN, CE ;

CORNELL, EA .

SCIENCE, 1995, 269 (5221) :198-201

[2]

Bird G. A., 1994, MOL GAS DYNAMICS DIR

[3] Bose-Einstein condensation of lithium: Observation of limited condensate number [J].

Bradley, CC ;

Sackett, CA ;

Hulet, RG .

PHYSICAL REVIEW LETTERS, 1997, 78 (06) :985-989

[4] EVIDENCE OF BOSE-EINSTEIN CONDENSATION IN AN ATOMIC GAS WITH ATTRACTIVE INTERACTIONS [J].

BRADLEY, CC ;

SACKETT, CA ;

TOLLETT, JJ ;

HULET, RG .

PHYSICAL REVIEW LETTERS, 1995, 75 (09) :1687-1690

[5] Prospects for mixed-isotope Bose-Einstein condensates in rubidium [J].

Burke, JP ;

Bohn, JL ;

Esry, BD ;

Greene, CH .

PHYSICAL REVIEW LETTERS, 1998, 80 (10) :2097-2100

[6] Ultracold scattering properties of the short-lived Rb isotopes [J].

Burke, JP ;

Bohn, JL .

PHYSICAL REVIEW A, 1999, 59 (02) :1303-1308

[7]

BURKE JP, 1999, THESIS U COLORADO

[8] Stable 85Rb Bose-Einstein condensates with widely tunable interactions [J].

Cornish, SL ;

Claussen, NR ;

Roberts, JL ;

Cornell, EA ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 2000, 85 (09) :1795-1798

[9] BOSE-EINSTEIN CONDENSATION IN A GAS OF SODIUM ATOMS [J].

DAVIS, KB ;

MEWES, MO ;

ANDREWS, MR ;

VANDRUTEN, NJ ;

DURFEE, DS ;

KURN, DM ;

KETTERLE, W .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :3969-3973

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

DeMarco, B ;

Jin, DS .

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