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We develop a complete theoretical description of photoassociative Stimulated Raman Adiabatic Passage (STIRAP) near a Feshbach resonance in a thermal atomic gas. We show that it is possible to use low intensity laser pulses to directly…

量子物理 · 物理学 2015-05-13 Elena Kuznetsova , Susanne F. Yelin , Marko Gacesa , Philippe Pellegrini , Robin Côté

Using the technique of stimulated Raman adiabatic passage (STIRAP) we have coherently transferred ultracold 87Rb2 Feshbach molecules into a more deeply bound vibrational quantum level. Our measurements indicate a high transfer efficiency of…

其他凝聚态物理 · 物理学 2009-11-11 K. Winkler , F. Lang , G. Thalhammer , P. v. d. Straten , R. Grimm , J. Hecker Denschlag

We report on the creation of ultracold 84Sr2 molecules in the electronic ground state. The molecules are formed from atom pairs on sites of an optical lattice using stimulated Raman adiabatic passage (STIRAP). We achieve a transfer…

量子气体 · 物理学 2012-09-18 Simon Stellmer , Benjamin Pasquiou , Rudolf Grimm , Florian Schreck

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…

We propose a new type of Feshbach resonance occurring when two different ultracold atoms in their ground state undergo an s-wave collision in the presence of a continuous-wave laser light. The atoms collide in the dissociation continuum of…

We suggest and analyze a novel technique for efficient and robust creation of dense ultracold molecular ensembles in their ground rovibrational state. In our approach a molecule is brought to the ground state through a series of…

量子物理 · 物理学 2009-11-13 Elena Kuznetsova , Philippe Pellegrini , Robin Côté , M. D. Lukin , S. F. Yelin

We identify a route for the production of $^{87}$Rb$^{133}$Cs molecules in the $\textrm{X} \, ^1\Sigma^+$ rovibronic ground state that is compatible with efficient mixing of the atoms in optical lattices. We first construct a model for the…

We propose to create ultracold ground state molecules in an atomic Bose-Einstein condensate by adiabatic crossing of an optical Feshbach resonance. We envision a scheme where the laser intensity and possibly also frequency are linearly…

量子物理 · 物理学 2007-05-23 Christiane P. Koch Françoise Masnou-Seeuws Ronnie Kosloff

One possible way to produce ultracold, 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…

Chainwise stimulated Raman adiabatic passage (C-STIRAP) in M-type molecular system is a good alternative in creating ultracold deeply-bound molecules when the typical STIRAP in {\Lambda}-type system does not work due to weak Frank-Condon…

量子物理 · 物理学 2024-08-06 Jiahui Zhang , Li Deng , Yueping Niu , Shangqing Gong

We generalize the idea of chainwise stimulated Raman adiabatic passage (STIRAP) [Kuznetsova \textit{et al.} Phys. Rev. A \textbf{78}, 021402(R) (2008)] to a photoassociation-based chainwise atom-molecule system, with the goal of directly…

量子气体 · 物理学 2015-05-18 Jing Qian , Weiping Zhang , Hong Y. Ling

We study the conversion of $^{40}$K and $^{87}$Rb atoms into stable molecules through the stimulated Raman adiabatic passage (STIRAP) in photoassociation assisted with Feshbach resonance. Starting with the mean-field Langrange density, we…

软凝聚态物质 · 物理学 2007-11-24 Li-Hua Lu , You-Quan Li

STIRAP (Stimulated Raman Adiabatic Passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of population between quantum states. A particularly interesting feature is the fact that the…

Many experimental platforms for quantum science depend on state control via laser fields. Frequently, however, the control fidelity is limited by optical phase noise. This is exacerbated in stabilized laser systems where high-frequency…

We examine dark quantum superposition states of weakly bound Rb2 Feshbach molecules and tightly bound triplet Rb2 molecules in the rovibrational ground state, created by subjecting a pure sample of Feshbach molecules in an optical lattice…

其他凝聚态物理 · 物理学 2015-05-13 Florian Lang , Christoph Strauss , Klaus Winkler , Tetsu Takekoshi , Rudolf Grimm , Johannes Hecker Denschlag

We report on the direct conversion of laser-cooled 41K and 87Rb atoms into ultracold 41K87Rb molecules in the rovibrational ground state via photoassociation followed by stimulated Raman adiabatic passage. High-resolution spectroscopy based…

原子物理 · 物理学 2015-05-19 K. Aikawa , D. Akamatsu , M. Hayashi , K. Oasa , J. Kobayashi , P. Naidon , T. Kishimoto , M. Ueda , S. Inouye

We report the creation of ultracold ground state $^{6}\textrm{Li}^{40}\textrm{K}$ polar molecules with high efficiency. Starting from weakly-bound molecules state, stimulated Raman adiabatic passage (STIRAP) is adopted to coherently…

量子气体 · 物理学 2023-10-06 Canming He , Xiaoyu Nie , Victor Avalos , Sofia Botsi , Sunil Kumar , Anbang Yang , Kai Dieckmann

We present a method for the creation and control of cold molecules that involves coherently combining Feshbach Resonances and STIRAP. We present analytical and numerical results showing how to optimize this process that can be implemented…

原子物理 · 物理学 2019-10-09 Phillip Price , Susanne Yelin

We report efficient all-optical creation of an ultracold gas of alkaline-earth-metal dimers, $^{88}\rm{Sr}_2$, in their absolute ground state. Starting with weakly bound singlet molecules formed by narrow-line photoassociation in an optical…

原子物理 · 物理学 2021-11-01 K. H. Leung , E. Tiberi , B. Iritani , I. Majewska , R. Moszynski , T. Zelevinsky

We report the binding energy of $^{87}$Rb$^{133}$Cs molecules in their rovibrational ground state measured using an offset-free optical frequency comb based on difference frequency generation technology. We create molecules in the absolute…

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