Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Bartenstein, M"'
Autor:
Fuchs, J., Duffy, G. J., Veeravalli, G., Dyke, P., Bartenstein, M., Vale, C. J., Hannaford, P., Rowlands, W. J.
We produce Bose-Einstein condensates of 6Li2 molecules in a low power (22 W) crossed optical dipole trap. Fermionic 6Li atoms are collected in a magneto-optical trap from a Zeeman slowed atomic beam, then loaded into the optical dipole trap where the
Externí odkaz:
http://arxiv.org/abs/0709.2212
Autor:
Altmeyer, A., Riedl, S., Kohstall, C., Wright, M., Geursen, R., Bartenstein, M., Chin, C., Denschlag, J. Hecker, Grimm, R.
Publikováno v:
Phys.Rev.Lett.98:040401,2007
We report on precision measurements of the frequency of the radial compression mode in a strongly interacting, optically trapped Fermi gas of Li-6 atoms. Our results allow for a test of theoretical predictions for the equation of state in the BEC-BCS
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609390
Autor:
Bartenstein, M., Altmeyer, A., Riedl, S., Jochim, S., Geursen, R., Chin, C., Denschlag, J. Hecker, Grimm, R.
We present an overview of our recent measurements on the crossover from a Bose-Einstein condensate of molecules to a Bardeen-Cooper-Schrieffer superfluid. The experiments are performed on a two-component spin-mixture of $^6$Li atoms, where a Fesh\-ba
Externí odkaz:
http://arxiv.org/abs/cond-mat/0412712
Autor:
Bartenstein, M., Altmeyer, A., Riedl, S., Geursen, R., Jochim, S., Chin, C., Denschlag, J. Hecker, Grimm, R., Simoni, A., Tiesinga, E., Williams, C. J., Julienne, P. S.
Publikováno v:
Phys. Rev. Lett. 94, 103201 (2005)
We employ radio-frequency spectroscopy on weakly bound $^6$Li$_2$ molecules to precisely determine the molecular binding energies and the energy splittings between molecular states for different magnetic fields. These measurements allow us to extract
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408673
Autor:
Bartenstein, M., Altmeyer, A., Riedl, S., Jochim, S., Chin, C., Denschlag, J. Hecker, Grimm, R.
Publikováno v:
Phys. Rev. Lett. 92, 203201 (2004)
We study collective excitation modes of a fermionic gas of $^6$Li atoms in the BEC-BCS crossover regime. While measurements of the axial compression mode in the cigar-shaped trap close to a Feshbach resonance confirm theoretical expectations, the rad
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403716
Autor:
Bartenstein, M., Altmeyer, A., Riedl, S., Jochim, S., Chin, C., Denschlag, J. Hecker, Grimm, R.
Publikováno v:
Physical Review Letter 92, 120401 (2004)
We demonstrate a reversible conversion of a Li2 molecular Bose-Einstein condensate to a degenerate Fermi gas of atoms by adiabatically crossing a Feshbach resonance. By optical in situ imaging, we observe a smooth change of the cloud size in the cros
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401109
Autor:
Jochim, S., Bartenstein, M., Altmeyer, A., Hendl, G., Chin, C., Denschlag, J. Hecker, Grimm, R.
Publikováno v:
Phys. Rev. Lett. 91, 240402 (2003)
We report on the production of a pure sample of up to 3x10^5 optically trapped molecules from a Fermi gas of 6Li atoms. The dimers are formed by three-body recombination near a Feshbach resonance. For purification a Stern-Gerlach selection technique
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308095
Autor:
Schneider, S., Kasper, A., Hagen, Ch. vom, Bartenstein, M., Engeser, B., Schumm, T., Bar-Joseph, I., Folman, R., Feenstra, L., Schmiedmayer, J.
Publikováno v:
Phys. Rev. A 67, 023612 (2003)
A Bose-Einstein condensate is created in a simple and robust miniature Ioffe-Pritchard trap, the so-called Z trap. This trap follows from the mere combination of a Z-shaped current carrying wire and a homogeneous bias field. The experimental procedur
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210488
Autor:
Jochim, S., Bartenstein, M., Hendl, G., Denschlag, J. Hecker, Grimm, R., Mosk, A., Weidemüller, M.
Publikováno v:
Phys. Rev. Lett. 89, 273202 (2002)
We study elastic collisions in an optically trapped spin mixture of fermionic lithium atoms in the presence of magnetic fields up to 1.5kG by measuring evaporative loss. Our experiments confirm the expected magnetic tunability of the scattering lengt
Externí odkaz:
http://arxiv.org/abs/physics/0207098
Autor:
Chin, C., Bartenstein, M., Altmeyer, A., Riedl, S., Jochim, S., Denschlag, J. Hecker, Grimm, R.
Publikováno v:
Science, 2004 Aug . 305(5687), 1128-1130.
Externí odkaz:
https://www.jstor.org/stable/3837612
