Zobrazeno 1 - 10
of 987
pro vyhledávání: '"Schulte T"'
Autor:
Drenkelforth, S., Büning, G. Kleine, Will, J., Schulte, T., Murray, N., Ertmer, W., Santos, L., Arlt, J. J.
We investigate both experimentally and theoretically disorder induced damping of Bloch oscillations of Bose-Einstein condensates in optical lattices. The spatially inhomogeneous force responsible for the damping is realised by a combination of a diso
Externí odkaz:
http://arxiv.org/abs/0801.3437
Autor:
Schulte, T., Drenkelforth, S., Büning, G. Kleine, Ertmer, W., Arlt, J., Lewenstein, M., Santos, L.
We present a detailed analysis of the dynamics of Bloch oscillations of Bose-Einstein condensates in disordered lattice potentials. Due to the disorder and the interparticle interactions these oscillations undergo a dephasing, reflected in a damping
Externí odkaz:
http://arxiv.org/abs/0707.3131
Autor:
Schulte, T., Drenkelforth, S., Kruse, J., Tiemeyer, R., Sacha, K., Zakrzewski, J., Lewenstein, M., Ertmer, W., Arlt, J. J.
Disorder plays a crucial role in many systems particularly in solid state physics. However, the disorder in a particular system can usually not be chosen or controlled. We show that the unique control available for ultracold atomic gases may be used
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609774
Autor:
Kottke, M., Schulte, T., Cacciapuoti, L., Hellweg, D., Drenkelforth, S., Ertmer, W., Arlt, J. J.
We measure the frequency of the low m=0 quadrupolar excitation mode of weakly interacting Bose-Einstein condensates in the transition region from the 3D to the 1D mean-field regime. Various effects shifting the frequency of the mode are discussed. In
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508335
Autor:
Schulte, T., Drenkelforth, S., Kruse, J., Ertmer, W., Arlt, J., Sacha, K., Zakrzewski, J., Lewenstein, M.
We investigate, both experimentally and theoretically, possible routes towards Anderson-like localization of Bose-Einstein condensates in disordered potentials. The dependence of this quantum interference effect on the nonlinear interactions and the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507453
Akademický článek
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Autor:
Cacciapuoti, L., Hellweg, D., Kottke, M., Schulte, T., Sengstock, K., Ertmer, W., Arlt, J. J., Santos, L., Lewenstein, M.
The coherence properties of phase fluctuating Bose-Einstein condensates are studied both theoretically and experimentally. We derive a general expression for the N-particle correlation function of a condensed Bose gas in a highly elongated trapping p
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308135
Autor:
Hellweg, D., Cacciapuoti, L., Kottke, M., Schulte, T., Sengstock, K., Ertmer, W., Arlt, J. J.
We measure the intensity correlation function of two interfering spatially displaced copies of a phase fluctuating Bose-Einstein Condensate (BEC). It is shown that this corresponds to a measurement of the phase correlation properties of the initial c
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303308
We analyze the vortex dynamics and vortex-vortex interactions in Bose-Einstein condensates confined in toroidal traps. We show that this particular geometry strongly distorts the vortex dynamics. The numerically calculated vortex trajectories are wel
Externí odkaz:
http://arxiv.org/abs/cond-mat/0202481
We propose a method for generating and controlling a spatially separated vortex--antivortex pair in a Bose-Einstein condensate trapped in a toroidal potential. Our simulations of the time dependent Gross-Pitaevskii equation show that in toroidal cond
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005136