Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Ospelkaus, S"'
Direct laser cooling and trapping of molecules to temperature below Doppler limit and density exceeding $10^8$ are challenging due to the sub-Doppler heating effects of molecular magneto-optical trap (MOT). In our previous paper [1], we presented a g
Externí odkaz:
http://arxiv.org/abs/2305.16576
High resolution Fourier transform spectroscopy and Laser induced fluorescence has been performed on LiCa in the infrared spectral range. We analyze rovibrational transitions of the $(2)^2\Sigma^+$--$X(1)^2\Sigma^+$ system of LiCa and find the $(2)^2\
Externí odkaz:
http://arxiv.org/abs/2209.07853
Current dual-frequency magneto-optical traps for ultracold molecules are plagued by sub-Doppler heating effects, making them vastly inferior to standard atomic MOTs. Here we demonstrate theoretically that the sub-Doppler effects in such a MOT can be
Externí odkaz:
http://arxiv.org/abs/2203.07754
In this paper we investigate the feasibility of Zeeman slowing calcium monofluoride (CaF) molecules originating from a cryogenic buffer gas cell. We measure the $A^2\Pi_{1/2} (v=0, J=\frac{1}{2}) - X^2\Sigma_{1/2} (v=0, N=1)$ hyperfine spectrum of Ca
Externí odkaz:
http://arxiv.org/abs/2104.08235
Magneto-optical trapping (MOT) is a key technique on the route towards ultracold molecular ensembles. However, the realization and optimization of magneto-optical traps with their wide parameter space is particularly difficult. Here, we present a ver
Externí odkaz:
http://arxiv.org/abs/2104.07984
Autor:
Gersema, P., Voges, K. K., Borgloh, M. Meyer zum Alten, Koch, L., Hartmann, T., Zenesini, A., Ospelkaus, S., Lin, J., He, J., Wang, D.
We probe photo-induced loss for chemically stable bosonic $^{23}$Na$^{87}$Rb and $^{23}$Na$^{39}$K molecules in chopped optical dipole traps where the molecules spend a significant time in the dark. We expect the effective two-body decay to be largel
Externí odkaz:
http://arxiv.org/abs/2103.00510
Publikováno v:
New J. Phys. 18 (2016) 045017
In this paper, we present an electrode geometry for the manipulation of ultracold rovibrational ground state NaK molecules. The electrode system allows to induce a dipole moment in trapped diatomic NaK molecules with a magnitude up to $68 \%$ of thei
Externí odkaz:
http://arxiv.org/abs/1603.08348
Autor:
Schulze, T. A., Temelkov, I. I., Gempel, M. W., Hartmann, T., Knöckel, H., Ospelkaus, S., Tiemann, E.
We explore possible pathways for the creation of ultracold polar NaK molecules in their absolute electronic and rovibrational ground state starting from ultracold Feshbach molecules. In particular, we present a multi-channel analysis of the electroni
Externí odkaz:
http://arxiv.org/abs/1305.3419
Autor:
de Miranda, M. H. G., Chotia, A., Neyenhuis, B., Wang, D., Quemener, G., Ospelkaus, S., Bohn, J. L., Ye, J., Jin, D. S.
Publikováno v:
Nature Phys. 7, 502 - 507 (2011)
Chemical reaction rates often depend strongly on stereodynamics, namely the orientation and movement of molecules in three-dimensional space. An ultracold molecular gas, with a temperature below 1 uK, provides a highly unusual regime for chemistry, w
Externí odkaz:
http://arxiv.org/abs/1010.3731
Publikováno v:
Phys. Rev. A 81, 061404(R) (2010)
We demonstrate a scheme for direct absorption imaging of an ultracold ground-state polar molecular gas near quantum degeneracy. A challenge in imaging molecules is the lack of closed optical cycling transitions. Our technique relies on photon shot-no
Externí odkaz:
http://arxiv.org/abs/1003.2583