Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Ospelkaus, Silke"'
A model for photoassociation of ultracold atoms and molecules is presented, and applied to the case of $^{39}$K and $^{23}$Na$^{39}$K bosonic particles. The model relies on the assumption that photoaossociation is dominated by long-range atom-molecul
Externí odkaz:
http://arxiv.org/abs/2303.11891
Autor:
Karam, Charbel, Borgloh, Mara Meyer zum Alten, Vexiau, Romain, Lepers, Maxence, Ospelkaus, Silke, Bouloufa-Maafa, Nadia, Karpa, Leon, Dulieu, Olivier
We propose a method to engineer repulsive long-range interactions between ultracold ground-state molecules using optical fields, thus preventing short-range collisional losses. It maps the microwave coupling recently used for collisional shielding on
Externí odkaz:
http://arxiv.org/abs/2211.08950
Publikováno v:
Phys. Rev. Research, 6 June 2022
We prepare mixtures of ultracold $^{39}$K atoms in various hyperfine spin states and $^{23}$Na$^{39}$K molecules in an optical dipole trap at a fixed magnetic field and study inelastic two-body atom-molecule collisions. We observe atom-molecule losse
Externí odkaz:
http://arxiv.org/abs/2109.03605
Autor:
Voges, Kai K., Gersema, Philipp, Borgloh, Mara Meyer zum Alten, Schulze, Torben A., Hartmann, Torsten, Zenesini, Alessandro, Ospelkaus, Silke
We report the creation of ultracold bosonic dipolar $^{23}\textrm{Na}^{39}\textrm{K}$ molecules in their absolute rovibrational ground state. Starting from weakly bound molecules immersed in an ultracold atomic mixture, we coherently transfer the dim
Externí odkaz:
http://arxiv.org/abs/2008.05439
Autor:
Wolf, Fabian, Heip, Jan C., Zawierucha, Maximilian J., Shi, Chunyan, Ospelkaus, Silke, Schmidt, Piet O.
Publikováno v:
New J. Phys. 26 013028 (2024)
Precision spectroscopy has been the driving force for progress of our physical understanding and still is a promising tool for the investigation of new physics. Molecules offer transitions which allow tests that are not possible in atomic systems. Ho
Externí odkaz:
http://arxiv.org/abs/2002.05584
Autor:
Tiemann, Eberhard, Gersema, Philipp, Voges, Kai K., Hartmann, Torsten, Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
Phys. Rev. Research 2, 013366 (2020)
We report on deviations beyond the Born-Oppenheimer approximation in the potassium inter-atomic potentials. Identifying three up-to-now unknown $d$-wave Feshbach resonances, we significantly improve the understanding of the $^{39}$K inter-atomic pote
Externí odkaz:
http://arxiv.org/abs/1912.07395
Autor:
Voges, Kai K., Gersema, Philipp, Hartmann, Torsten, Schulze, Torben A., Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
Phys. Rev. A 101, 042704 (2020)
We create weakly bound bosonic $^{23}\textrm{Na}^{39}\textrm{K}$ molecules in a mixture of ultracold $^{23}\textrm{Na}$ and $^{39}\textrm{K}$. The creation is done in the vicinity of a so far undetected Feshbach resonance at about $196\,\text{G}$ whi
Externí odkaz:
http://arxiv.org/abs/1912.04395
Autor:
Voges, Kai K., Gersema, Philipp, Hartmann, Torsten, Schulze, Torben A., Zenesini, Alessandro, Ospelkaus, Silke
Publikováno v:
New J. Phys. 21 (2019) 123034
We spectroscopically investigate a pathway for the conversion of $^{23}\textrm{Na}^{39}\textrm{K}$ Feshbach molecules into rovibronic ground state molecules via STImulated Raman Adiabatic Passage (STIRAP). Using photoassociation spectroscopy from the
Externí odkaz:
http://arxiv.org/abs/1910.13771
Autor:
Bergmann, Klaas, Nägerl, Hanns-Christoph, Panda, Cristian, Gabrielse, Gerald, Miloglyadov, Eduard, Quack, Martin, Seyfang, Georg, Wichmann, Gunther, Ospelkaus, Silke, Kuhn, Axel, Longhi, Stefano, Szameit, Alexander, Pirro, Philipp, Hillebrands, Burkard, Zhu, Xue-Feng, Zhu, Jie, Drewsen, Michael, Hensinger, Winfried K., Weidt, Sebastian, Halfmann, Thomas, Wang, Hailin, Paraoanu, G. S., Vitanov, Nikolay V., Mompart, J., Busch, Th., Barnum, Timothy J., Grimes, David D., Field, Robert W., Raizen, Mark G., Narevicius, Edvardas, Auzinsh, Marcis, Budker, Dmitry, Pálffy, Adriana, Keitel, Christoph H.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 52 202001 (2019)
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 coupling b
Externí odkaz:
http://arxiv.org/abs/1908.01611
Publikováno v:
Phys. Rev. Research 3, 033208 (2021)
We present and analyze a toolbox for the controlled manipulation of ultracold polar molecules, consisting of detection of molecules, atom-molecule entanglement, and engineering of dissipative dynamics. Our setup is based on fast chemical reactions be
Externí odkaz:
http://arxiv.org/abs/1906.09263