Report
Precision molecular spectroscopy for ground state transfer of molecular quantum gases
| العنوان: | Precision molecular spectroscopy for ground state transfer of molecular quantum gases |
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| المؤلفون: | Danzl, Johann G., Mark, Manfred J., Haller, Elmar, Gustavsson, Mattias, Bouloufa, Nadia, Dulieu, Olivier, Ritsch, Helmut, Hart, Russell, Naegerl, Hanns-Christoph |
| سنة النشر: | 2008 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Other Condensed Matter |
| الوصف: | One possibility for the creation of ultracold, high-phase-space-density quantum gases of molecules in the rovibrational ground state relies on first associating weakly-bound molecules from quantum-degenerate atomic gases on a Feshbach resonance and then transfering the molecules via several steps of coherent two-photon stimulated Raman adiabatic passage (STIRAP) into the rovibronic ground state. Here, in ultracold samples of Cs_2 Feshbach molecules produced out of ultracold samples of Cs atoms, we observe several optical transitions to deeply bound rovibrational levels of the excited 0_u^+ molecular potentials with high resolution. At least one of these transitions, although rather weak, allows efficient STIRAP transfer into the deeply bound vibrational level |v=73> of the singlet X ^1Sigma_g^+ ground state potential, as recently demonstrated. From this level, the rovibrational ground state level |v=0, J=0> can be reached with one more transfer step. In total, our results show that coherent ground state transfer for Cs_2 is possible using a maximum of two successive two-photon processes or one single four-photon STIRAP process. Comment: 6 figures, 1 table |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1039/b820542f |
| URL الوصول: | http://arxiv.org/abs/0811.2374 |
| رقم الانضمام: | edsarx.0811.2374 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1039/b820542f |
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