Dark resonances for ground-state transfer of molecular quantum gases

M. J. Mark, J. G. Danzl, E. Haller, M. Gustavsson, N. Bouloufa, O. Dulieu, H. Salami, T. Bergeman, H. Ritsch, R. Hart, H.-C. Nägerl

Research output: Contribution to journalArticle

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Abstract

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 >.
LanguageUndefined/Unknown
Pages219-225
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume95
Issue number2
DOIs
Publication statusPublished - 1 Feb 2009

Keywords

  • molecular quantum gases
  • dark resonances
  • optics

Cite this

Mark, M. J., Danzl, J. G., Haller, E., Gustavsson, M., Bouloufa, N., Dulieu, O., ... Nägerl, H-C. (2009). Dark resonances for ground-state transfer of molecular quantum gases. Applied Physics B: Lasers and Optics, 95(2), 219-225. https://doi.org/10.1007/s00340-009-3407-1
Mark, M. J. ; Danzl, J. G. ; Haller, E. ; Gustavsson, M. ; Bouloufa, N. ; Dulieu, O. ; Salami, H. ; Bergeman, T. ; Ritsch, H. ; Hart, R. ; Nägerl, H.-C. / Dark resonances for ground-state transfer of molecular quantum gases. In: Applied Physics B: Lasers and Optics. 2009 ; Vol. 95, No. 2. pp. 219-225.
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Mark, MJ, Danzl, JG, Haller, E, Gustavsson, M, Bouloufa, N, Dulieu, O, Salami, H, Bergeman, T, Ritsch, H, Hart, R & Nägerl, H-C 2009, 'Dark resonances for ground-state transfer of molecular quantum gases' Applied Physics B: Lasers and Optics, vol. 95, no. 2, pp. 219-225. https://doi.org/10.1007/s00340-009-3407-1

Dark resonances for ground-state transfer of molecular quantum gases. / Mark, M. J.; Danzl, J. G.; Haller, E.; Gustavsson, M.; Bouloufa, N.; Dulieu, O.; Salami, H.; Bergeman, T.; Ritsch, H.; Hart, R.; Nägerl, H.-C.

In: Applied Physics B: Lasers and Optics, Vol. 95, No. 2, 01.02.2009, p. 219-225.

Research output: Contribution to journalArticle

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T1 - Dark resonances for ground-state transfer of molecular quantum gases

AU - Mark, M. J.

AU - Danzl, J. G.

AU - Haller, E.

AU - Gustavsson, M.

AU - Bouloufa, N.

AU - Dulieu, O.

AU - Salami, H.

AU - Bergeman, T.

AU - Ritsch, H.

AU - Hart, R.

AU - Nägerl, H.-C.

PY - 2009/2/1

Y1 - 2009/2/1

N2 - 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 >.

AB - 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 >.

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KW - dark resonances

KW - optics

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M3 - Article

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SP - 219

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JO - Applied Physics B: Lasers and Optics

T2 - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

SN - 0946-2171

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ER -