Dark resonances for ground-state transfer of molecular quantum gases

被引：39

作者：

Mark, M. J. ^{[1
,2
]}

Danzl, J. G. ^{[1
,2
]}

Haller, E. ^{[1
,2
]}

Gustavsson, M. ^{[1
,2
]}

Bouloufa, N. ^{[3
]}

Dulieu, O. ^{[3
]}

Salami, H. ^{[4
]}

Bergeman, T. ^{[4
]}

Ritsch, H. ^{[2
,5
]}

Hart, R. ^{[1
,2
]}

Naegerl, H. -C. ^{[1
,2
]}

机构：

[1] Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria

[2] Univ Innsbruck, Zentrum Quantenphys, A-6020 Innsbruck, Austria

[3] Univ Paris 11, CNRS, Aime Cotton Lab, F-91405 Orsay, France

[4] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[5] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2009年 / 95卷 / 02期

关键词：

POPULATION TRANSFER; POLAR-MOLECULES; ULTRACOLD; PHOTOASSOCIATION; SPECTROSCOPY; ATOMS; CS-2; K-2;

D O I：

10.1007/s00340-009-3407-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

One possible way to produce ultra-cold, high-phase-space-density quantum gases of molecules in the rovibronic ground state is given by molecule association from quantum-degenerate atomic gases on a Feshbach resonance and subsequent coherent optical multi-photon transfer into the rovibronic ground state. In ultra-cold samples of Cs-2 molecules, we observe two-photon dark resonances that connect the intermediate rovibrational level vertical bar v=73,J=2 > with the rovibrational ground state vertical bar v=0,J=0 > of the singlet X (1) I pound (g) (+) ground-state potential. For precise dark resonance spectroscopy we exploit the fact that it is possible to efficiently populate the level vertical bar v=73,J=2 > by two-photon transfer from the dissociation threshold with the stimulated Raman adiabatic passage (STIRAP) technique. We find that at least one of the two-photon resonances is sufficiently strong to allow future implementation of coherent STIRAP transfer of a molecular quantum gas to the rovibrational ground state vertical bar v=0,J=0 >.

引用

页码：219 / 225

页数：7

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