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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

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

Ultracold ground state dipolar 40K-87Rb molecules have recently been produced in a loose harmonic trap by employing a magnetic field sweep across a Feshbach resonance followed by stimulated Raman adiabatic passage [K.-K. Ni et al., Science…

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

We theoretically examine Raman photoassociation of a Bose-Einstein condensate, revisiting stimulated Raman adiabatic passage (STIRAP). Due to collisional mean-field shifts, efficient molecular conversion requires strong coupling and low…

原子物理 · 物理学 2007-05-23 Matt Mackie , Kari Harkonen , Anssi Collin , Kalle-Antti Suominen , Juha Javanainen

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 produce ${^{84}\mathrm{Sr}_2}$ molecules using Bose-enhanced Raman photoassociation. We apply the stimulated Raman adiabatic passage (STIRAP) technique on a Bose-Einstein condensate (BEC) to produce more than $8 \times 10^3$ ultracold…

量子气体 · 物理学 2017-12-05 Alessio Ciamei , Alex Bayerle , Benjamin Pasquiou , Florian Schreck

We theoretically explore photoassociation by Adiabatic Passage of two colliding cold ^{85}Rb atoms in an atomic trap to form an ultracold Rb_2 molecule. We consider the incoherent thermal nature of the scattering process in a trap and show…

量子物理 · 物理学 2009-11-13 Evgeny A. Shapiro , Moshe Shapiro , Avi Pe'er , Jun Ye

Collective two-color photoassociation of a freely-interacting 87Rb Bose-Einstein condensate is theoretically examined, focusing on stimulated Raman adiabatic passage (STIRAP) from an atomic to a stable molecular condensate. In particular,…

原子物理 · 物理学 2016-09-08 Matt Mackie , Anssi Collin , Juha Javanainen

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

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 develop the theory for the Adiabatic Raman Photoassociation (ARPA) of ultracold atoms to form ultracold molecules in the presence of scattering resonances. Based on a computational method in which we replace the continuum with a discrete…

原子物理 · 物理学 2012-11-27 Alex C. Han , Evgeny A. Shapiro , Moshe Shapiro

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

In the Comment by M. Mackie \textit{et al.} [arXiv: physics/0212111 v.4], the authors suggest that the molecular conversion efficiency in atom-molecule STIRAP can be improved by lowering the initial atomic density, which in turn requires…

原子物理 · 物理学 2007-05-23 P. D. Drummond , K. V. Kheruntsyan , D. J. Heinzen , R. H. Wynar

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

The efficiency of converting two-species fermionic atoms into bosonic molecules is investigated in terms of mean-field Lagrangian density. We find that the STIRAP technique aided by Feshbach resonance is more effective than the bare…

其他凝聚态物理 · 物理学 2008-06-10 Li-Hua Lu , You-Quan Li

State-of-the-art {\em ab initio} techniques have been applied to compute the potential energy curves for the SrYb molecule in the Born-Oppenheimer approximation for the ground state and first fifteen excited singlet and triplet states…

We describe experiments demonstrating efficient transfer of molecules from a magneto-optical trap (MOT) into a conservative magnetic quadrupole trap. Our scheme begins with a blue-detuned optical molasses to cool SrF molecules to $\sim\!50$…

原子物理 · 物理学 2018-07-11 D. J. McCarron , M. H. Steinecker , Y. Zhu , D. DeMille

We report on a resonantly coupled 2(1) - 4 (1) photoassociation resonance in LiRb. This pair of states displays interesting decay physics that hint at interference-like effects caused by two different decay paths. We observe decay to…

原子物理 · 物理学 2016-12-28 I. C. Stevenson , D. Blasing , Y. P. Chen , D. S. Elliott

We consider in detail the situation of applying a time dependent external magnetic field to a 87Rb atomic Bose-Einstein condensate held in a harmonic trap, in order to adiabatically sweep the interatomic interactions across a Feshbach…

凝聚态物理 · 物理学 2007-05-23 Krzysztof Goral , Thorsten Koehler , Simon A. Gardiner , Eite Tiesinga , Paul S. Julienne
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