A pulsed atomic soliton laser

Details A pulsed atomic soliton laser A pulsed atomic soliton laser

2004-05-18

arxiv.org/abs/cond-mat/0405401v1

Phys. Rev. A, v.70, p.033607 (2004)

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 4 figures

Scientific paper

10.1103/PhysRevA.70.033607

It is shown that simultaneously changing the scattering length of an elongated, harmonically trapped Bose-Einstein condensate from positive to negative and inverting the axial portion of the trap, so that it becomes expulsive, results in a train of self-coherent solitonic pulses. Each pulse is itself a non-dispersive attractive Bose-Einstein condensate that rapidly self-cools. The axial trap functions as a waveguide. The solitons can be made robustly stable with the right choice of trap geometry, number of atoms, and interaction strength. Theoretical and numerical evidence suggests that such a pulsed atomic soliton laser can be made in present experiments.

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