Proposal for the formation of ultracold deeply-bound RbSr dipolar molecules by all-optical methods
| Autor: | Michèle Desouter-Lecomte, Adrien Devolder, Osman Atabek, E. Luc-Koenig, Olivier Dulieu |
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| Přispěvatelé: | Laboratoire Aimé Cotton (LAC), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie-Physique (LCP), Université de Cocody, Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan) |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Atomic Physics (physics.atom-ph) Stimulated Raman adiabatic passage Quantum simulator FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Diatomic molecule Physics - Atomic Physics 3. Good health Dipole Paramagnetism [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Ab initio quantum chemistry methods 0103 physical sciences Spontaneous emission Atomic physics 010306 general physics 0210 nano-technology Ground state ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Review A Physical Review A, American Physical Society 2018, 98 (5), ⟨10.1103/PhysRevA.98.053411⟩ |
| ISSN: | 2469-9926 2469-9934 |
| DOI: | 10.48550/arxiv.1806.10346 |
| Popis: | Ultracold paramagnetic and polar diatomic molecules are among the promising systems for quantum simulation of lattice-spin models. Unfortunately, their experimental observation is still challenging. Based on our recent \textit{ab-initio} calculations, we analyze the feasibility of all-optical schemes for the formation of ultracold $^{87}$Rb$^{84}$Sr bosonic molecules. First, we have studied the formation by photoassociation followed by spontaneous emission. The photoassociation rates to levels belonging to electronic states converging to the $^{87}$Rb$(5s\,^2S)$+$^{84}$Sr($5s5p\,^3P_{0,1,2}$) asymptotes are particularly small close to the asymptote. The creation of molecules would be more interesting by using deeply levels that preferentially relaxes to the $v''=0$ level of the ground state. On the other hands, the photoassociation rates to levels belonging to electronic states converging to the Rb$(5p\,^2P_{1/2,3/2})$+Sr($5s^2\,^1S$) asymptotes have high value close to the asymptote. The relaxation from the levels close to the asymptotes creates weakly-bound molecules in mosty only one vibrational level. Second, stimulated Raman adiabatic passage (STIRAP) achieved in a tight optical trap efficiently creates weakly-bound ground-state molecules in a well-defined level, thus providing an alternative to magnetic Feshbach resonances to implement several schemes for an adiabatic population transfer toward the lowest ground-state level of RbSr. Finally, we have studied STIRAP process for transferring the weakly-bound molecules into the $v''=0$ level of the RbSr ground state. Comment: 24 pages, 12 figures, 6 tables |
| Databáze: | OpenAIRE |
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