Guided atom laser: transverse mode quality and longitudinal momentum distribution
arXiv:1107.5888 · doi:10.1103/PhysRevA.84.043618
Abstract
We analyze the outcoupling of a matter wave into a guide by a time-dependent spilling of the atoms from an initially trapped Bose-Einstein condensate. This process yields intrinsically a breakdown of the adiabatic condition that triggers the outcoupling of the wave function. Our analysis of the time-dependent engineering and manipulation of condensates in momentum space in this context enables to work out the limits due to interactions in the mode quality of a guided atom laser. This study is consistent with recent experimental observations of low transverse excitations of guided atom lasers and suggests (i) an optimal strategy to realize such quasi-monomode guided atom lasers with, in addition, the lowest possible longitudinal velocity dispersion, or alternatively (ii) a strategy for engineering the atomic flux of the atom laser.
Phys. Rev. A 84, 043618 (2011)
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- Realization of a distributed Bragg reflector for propagating guided matter waves
- A Bose-condensed, simultaneous dual species Mach-Zehnder atom interferometer
- Optically guided beam splitter for propagating matter waves
- An ultra-bright atom laser
- Birth of a quasi-stationary black hole in an outcoupled Bose-Einstein condensate
- Breakdown of Anderson localization in the transport of Bose-Einstein condensates through one-dimensional disordered potentials
- Reduction of local velocity spreads by linear potentials
- Realization of tunnel barriers for matter waves using spatial gaps
- Phase space manipulations of many-body wavefunctions
- Quantum transport in the black-hole configuration of an atom condensate outcoupled through an optical lattice
- Inversion of coherent backscattering with interacting Bose-Einstein condensates in two-dimensional disorder : a Truncated Wigner approach
- Al'tshuler-Aronov-Spivak oscillations of bosonic matter-wave beams in the presence of interaction
- Adiabaticity in a time dependent trap: a passage near continuum threshold