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Publikováno v:
Phys. Rev. A 93, 053424 (2016)
We report on an efficient production scheme for a large quantum degenerate sample of fermionic lithium. The approach is based on our previous work on narrow-line $ 2S_{1/2}\rightarrow 3P_{3/2} $ laser cooling resulting in a high phase-space density o
Externí odkaz:
http://arxiv.org/abs/1605.03298
Dimer, trimer and FFLO liquids in mass- and spin-imbalanced trapped binary mixtures in one dimension
Autor:
Dalmonte, M., Dieckmann, K., Roscilde, T., Hartl, C., Feiguin, A. E., Schollwöck, U., Heidrich-Meisner, F.
Publikováno v:
Phys. Rev. A 85, 063608 (2012)
We present a systematic investigation of attractive binary mixtures in presence of both spin- and mass-imbalance in one dimensional setups described by the Hubbard model. After discussing typical cold atomic experimental realizations and the relation
Externí odkaz:
http://arxiv.org/abs/1203.5999
We report on the first creation of ultracold bosonic heteronuclear molecules of two fermionic species, 6Li and 40K, by a magnetic field sweep across an interspecies s-wave Feshbach resonance. This allows us to associate up to 4x10^4 molecules with hi
Externí odkaz:
http://arxiv.org/abs/0810.1306
We report on the generation of a quantum degenerate Fermi-Fermi mixture of two different atomic species. The quantum degenerate mixture is realized employing sympathetic cooling of fermionic Li-6 and K-40 gases by an evaporatively cooled bosonic Rb-8
Externí odkaz:
http://arxiv.org/abs/0710.2779
Autor:
Gupta, S., Hadzibabic, Z., Zwierlein, M. W., Stan, C. A., Dieckmann, K., Schunck, C. H., van Kempen, E. G. M., Verhaar, B. J., Ketterle, W.
Publikováno v:
Science, Vol. 300, 13 June 2003: 1723-1726
Radio-frequency techniques were used to study ultracold fermions. We observed the absence of mean-field "clock" shifts, the dominant source of systematic error in current atomic clocks based on bosonic atoms. This is a direct consequence of fermionic
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307259
Autor:
Hadzibabic, Z., Gupta, S., Stan, C. A., Schunck, C. H., Zwierlein, M. W., Dieckmann, K., Ketterle, W.
Publikováno v:
Phys. Rev. Lett. 91, 160401 (2003)
We have produced a quantum degenerate Li-6 Fermi gas with up to 7 x 10^7 atoms, an improvement by a factor of fifty over all previous experiments with degenerate Fermi gases. This was achieved by sympathetic cooling with bosonic Na-23 in the F=2, upp
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306050
Autor:
Shvarchuck, I., Buggle, Ch., Petrov, D. S., Dieckmann, K., Zielonkovski, M., Kemmann, M., Tiecke, T., von Klitzing, W., Shlyapnikov, G. V., Walraven, J. T. M.
Publikováno v:
Phys. Rev. Lett. 89-27, 270404 (2002)
We report the formation of Bose-Einstein condensates into non-equilibrium states. Our condensates are much longer than equilibrium condensates with the same number of atoms, show strong phase fluctuations, and have a dynamical evolution similar to th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207599
Publikováno v:
Phys. Rev. Lett. 89, 203201 (2002)
We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped 6-Li gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 G and 680 G due to two-
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207046
Publikováno v:
Phys. Rev. Lett. 89, 140401 (2002)
The kinetic energy of an atom recoiling due to absorption of a photon was measured as a frequency using an interferometric technique called ``contrast interferometry''. Optical standing wave pulses were used as atom-optical elements to create a symme
Externí odkaz:
http://arxiv.org/abs/cond-mat/0202452