Molecular probe of pairing in the BEC-BCS crossover

被引：327

作者：

Partridge, GB ^{[1
]}

Strecker, KE

Kamar, RI

Jack, MW

Hulet, RG

机构：

[1] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA

[2] Rice Univ, Rice Quantum Inst, Houston, TX 77251 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.95.020404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used optical molecular spectroscopy to probe the many-body state of paired Li-6 atoms near a broad Feshbach resonance. The optical probe projects pairs of atoms onto a vibrational level of an excited molecule. The rate of excitation enables a precise measurement of the closed-channel contribution to the paired state. This contribution is found to be quite small, supporting the concept of universality for the description of broad Feshbach resonances. The dynamics of the excitation provide clear evidence for pairing across the BEC-BCS crossover and into the weakly interacting BCS regime.

引用

页数：4

共 25 条

[11]

DIENER R, CONDMAT0405174

[12] Atom-molecule coherence in Bose gases [J].

Duine, RA ;

Stoof, HTC .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2004, 396 (03) :115-195

[13] BCS to Bose crossover: Broken-symmetry state [J].

Engelbrecht, JR ;

Randeria, M ;

deMelo, CARS .

PHYSICAL REVIEW B, 1997, 55 (22) :15153-15156

[14] Elastic and inelastic collisions of 6Li atoms in magnetic and optical traps [J].

Houbiers, M ;

Stoof, HTC ;

McAlexander, WI ;

Hulet, RG .

PHYSICAL REVIEW A, 1998, 57 (03) :R1497-R1500

[15] Bose-Einstein condensation of molecules [J].

Jochim, S ;

Bartenstein, M ;

Altmeyer, A ;

Hendl, G ;

Riedl, S ;

Chin, C ;

Denschlag, JH ;

Grimm, R .

SCIENCE, 2003, 302 (5653) :2101-2103

[16] Heat capacity of a strongly interacting Fermi gas [J].

Kinast, J ;

Turlapov, A ;

Thomas, JE ;

Chen, QJ ;

Stajic, J ;

Levin, K .

SCIENCE, 2005, 307 (5713) :1296-1299

[17] Evidence for superfluidity in a resonantly interacting Fermi gas [J].

Kinast, J ;

Hemmer, SL ;

Gehm, ME ;

Turlapov, A ;

Thomas, JE .

PHYSICAL REVIEW LETTERS, 2004, 92 (15) :150402-1

[18] Intensity dependence of photoassociation in a quantum degenerate atomic gas [J].

Prodan, ID ;

Pichler, M ;

Junker, M ;

Hulet, RG ;

Bohn, JL .

PHYSICAL REVIEW LETTERS, 2003, 91 (08)

[19]

REAGL CA, 2004, PHYS REV LETT, V92

[20] Broad vs. narrow Fano-Feshbach resonances in the BCS-BEC crossover with trapped Fermi atoms [J].

Simonucci, S ;

Pieri, P ;

Strinati, GC .

EUROPHYSICS LETTERS, 2005, 69 (05) :713-718

← 1 2 3 →