Feshbach spectroscopy of a K-Rb atomic mixture

被引：139

作者：

Ferlaino, F

D'Errico, C

Roati, G

Zaccanti, M

Inguscio, M

Modugno, G

Simoni, A

机构：

[1] Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy

[2] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy

[3] CNR, INFM, I-50019 Sesto Fiorentino, Italy

[4] CNRS, UMR 6627, Lab Phys Atomes Lasers Mol & Surfaces, F-35042 Rennes, France

[5] Univ Rennes, F-35042 Rennes, France

来源：

PHYSICAL REVIEW A | 2006年 / 73卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.73.040702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We perform extensive magnetic Feshbach spectroscopy of an ultracold mixture of fermionic K-40 and bosonic Rb-87 atoms. The magnetic-field locations of 13 interspecies resonances are used to construct a quantum collision model able to predict accurate collisional parameters for all K-Rb isotopic pairs. In particular, we determine the interspecies s-wave singlet and triplet scattering lengths for the K-40-Rb-87 mixture as (-108 +/- 3)a(0) and (-205 +/- 5)a(0), respectively. We also predict accurate scattering lengths and the position of Feshbach resonances for the other K-Rb isotopic pairs. We discuss the consequences of our results for current and future experiments with ultracold K-Rb mixtures.

引用

收藏

页数：4

相关论文

共 30 条

[1] Superfluid pairing in a polarized dipolar Fermi gas [J].

Baranov, MA ;

Mar'enko, MS ;

Rychkov, VS ;

Shlyapnikov, GV .

PHYSICAL REVIEW A, 2002, 66 (01) :10-136061

[2]

BIJLSMA MJ, 2000, PHYS REV A, V61

[3] Collisional properties of ultracold potassium: Consequences for degenerate Bose and Fermi gases [J].

Bohn, JL ;

Burke, JP ;

Greene, CH ;

Wang, H ;

Gould, PL ;

Stwalley, WC .

PHYSICAL REVIEW A, 1999, 59 (05) :3660-3664

[4] 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

[5] Creation of a dipolar superfluid in optical lattices [J].

Damski, B ;

Santos, L ;

Tiemann, E ;

Lewenstein, M ;

Kotochigova, S ;

Julienne, P ;

Zoller, P .

PHYSICAL REVIEW LETTERS, 2003, 90 (11) :4

[6] High-precision calculations of van der Waals coefficients for heteronuclear alkali-metal dimers [J].

Derevianko, A ;

Babb, JF ;

Dalgarno, A .

PHYSICAL REVIEW A, 2001, 63 (05) :527041-527044

[7] p-wave Cooper pairing of fermions in mixtures of dilute Fermi and Bose gases -: art. no. 134519 [J].

Efremov, DV ;

Viverit, L .

PHYSICAL REVIEW B, 2002, 65 (13) :1-4

[8] Bipolar oscillations in a quantum degenerate Fermi-Bose atomic mixture [J].

Ferlaino, F ;

Brecha, RJ ;

Hannaford, P ;

Riboli, F ;

Roati, G ;

Modugno, G ;

Inguscio, M .

JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS, 2003, 5 (02) :S3-S8

[9] Collisional properties of ultracold K-Rb mixtures [J].

Ferrari, G ;

Inguscio, M ;

Jastrzebski, W ;

Modugno, G ;

Roati, G ;

Simoni, A .

PHYSICAL REVIEW LETTERS, 2002, 89 (05) :053202/1-053202/4

[10] Measurement of the interaction strength in a Bose-Fermi mixture with 87Rb and 40K -: art. no. 021601 [J].

Goldwin, J ;

Inouye, S ;

Olsen, ML ;

Newman, B ;

DePaola, BD ;

Jin, DS .

PHYSICAL REVIEW A, 2004, 70 (02) :021601-1