Atom laser dynamics in a tight-waveguide

Abstract

We study the transient dynamics that arise during the formation of an atom laser beam in a tight waveguide. During the time evolution the density profile develops a series of wiggles which are related to the diffraction in time phenomenon. The apodization of matter waves, which relies on the use of smooth aperture functions, allows to suppress such oscillations in a time interval, after which there is a revival of the diffraction in time. The revival time scale is directly related to the inverse of the harmonic trap frequency for the atom reservoir.

6 pages, 5 figures, to be published in the Proceedings of the 395th WE-Heraeus Seminar on "Time Dependent Phenomena in Quantum Mechanics ", organized by T. Kramer and M. Kleber (Blaubeuren, Germany, September 2007)

References in corpus (10)

• Attosecond double-slit experiment
• Guided Quasicontinuous Atom Laser
• Analysis of an atom laser based on the spatial control of the scattering length
• Dynamics of a Tonks-Girardeau gas released from a hard-wall trap
• Observing the Profile of an Atom Laser Beam
• Generic Short-Time Propagation of Sharp-Boundaries Wave Packets
• Time modulation of atom sources
• Matter-wave diffraction in time with a linear potential
• Quantum theory of an atom laser originating from a Bose-Einstein condensate or a Fermi gas in the presence of gravity
• Fringe spacing and phase of interfering matter waves