Radio-frequency association of molecules: an assisted Feshbach resonance

被引：10

作者：

Beaufils, Q. ^{[1
]}

Crubellier, A. ^{[2
]}

Zanon, T. ^{[1
]}

Laburthe-Tolra, B. ^{[1
]}

Marechal, E. ^{[1
]}

Vernac, L. ^{[1
]}

Gorceix, O. ^{[1
]}

机构：

[1] Univ Paris 13, Phys Lasers Lab, CNR, UMR 7538, F-93430 Villetaneuse, France

[2] CNRS II, Aime Cotton Lab, F-91405 Orsay, France

来源：

EUROPEAN PHYSICAL JOURNAL D | 2010年 / 56卷 / 01期

关键词：

GAS; COLLISIONS;

D O I：

10.1140/epjd/e2009-00269-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We develop a theoretical model to describe the radio-frequency (rf) induced coupling of a pair of colliding atoms to a Feshbach molecule when a magnetic field arbitrarily far from the Feshbach resonance is modulated in time. We use the dressed atom picture, and show that the coupling strength in presence of rf is equal to the Feshbach coupling strength multiplied by the square of a Bessel function. The argument of this function is equal to the ratio of the atomic rf Rabi frequency to the rf frequency. We experimentally demonstrate this law by measuring the rate of rf-association of molecules using a Feshbach resonance in d wave collisions between ultra-cold chromium atoms.

引用

页码：99 / 104

页数：6

共 31 条

[1] Feshbach resonance in d-wave collisions [J].

Beaufils, Q. ;

Crubellier, A. ;

Zanon, T. ;

Laburthe-Tolra, B. ;

Marechal, E. ;

Vernac, L. ;

Gorceix, O. .

PHYSICAL REVIEW A, 2009, 79 (03)

[2] Molecule formation in optical lattice wells by resonantly modulated magnetic fields [J].

Bertelsen, JF ;

Molmer, K .

PHYSICAL REVIEW A, 2006, 73 (01)

[3]

COHENTANNOUDJI C, 1992, ATOM PHOTON INTERACT, V2

[4] Quantum computation with trapped polar molecules [J].

DeMille, D .

PHYSICAL REVIEW LETTERS, 2002, 88 (06) :4

[5] Atom-molecule coherence in a Bose-Einstein condensate [J].

Donley, EA ;

Claussen, NR ;

Thompson, ST ;

Wieman, CE .

NATURE, 2002, 417 (6888) :529-533

[6] Analog of photon-assisted tunneling in a Bose-Einstein condensate [J].

Eckardt, A ;

Jinasundera, T ;

Weiss, C ;

Holthaus, M .

PHYSICAL REVIEW LETTERS, 2005, 95 (20)

[7] PHOTON-MEDIATED SEQUENTIAL RESONANT-TUNNELING IN INTENSE TERAHERTZ ELECTRIC-FIELDS [J].

GUIMARAES, PSS ;

KEAY, BJ ;

KAMINSKI, JP ;

ALLEN, SJ ;

HOPKINS, PF ;

GOSSARD, AC ;

FLOREZ, LT ;

HARBISON, JP .

PHYSICAL REVIEW LETTERS, 1993, 70 (24) :3792-3795

[8] Association of molecules using a resonantly modulated magnetic field [J].

Hanna, Thomas M. ;

Kohler, Thorsten ;

Burnett, Keith .

PHYSICAL REVIEW A, 2007, 75 (01)

[9] Production efficiency of ultracold Feshbach molecules in bosonic and fermionic systems [J].

Hodby, E ;

Thompson, ST ;

Regal, CA ;

Greiner, M ;

Wilson, AC ;

Jin, DS ;

Cornell, EA ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 2005, 94 (12)

[10] Cold molecule spectroscopy for constraining the evolution of the fine structure constant [J].

Hudson, ER ;

Lewandowski, HJ ;

Sawyer, BC ;

Ye, J .

PHYSICAL REVIEW LETTERS, 2006, 96 (14)

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