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Spontaneous squeezing of a vortex in an optical lattice

J. -P. Martikainen·H. T. C. Stoof
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Abstract

We study the equilibrium states of a vortex in a Bose-Einstein condensate in a one-dimensional optical lattice. We find that quantum effects can be important and that it is even possible for the vortex to be strongly squeezed, which reflects itself in a different quantum mechanical uncertainty of the vortex position in two orthogonal directions. The latter is observable by measuring the atomic density after an expansion of the Bose-Einstein condensate in the lattice.

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J. -P. Martikainen, H. T. C. Stoof. 2004-08-03. Spontaneous squeezing of a vortex in an optical lattice. https://doi.org/10.1103/physreva.70.013604

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