Quantum vortices in optical lattices

Details Quantum vortices in optical lattices Quantum vortices in optical lattices

2007-01-18

arxiv.org/abs/cond-mat/0701439v1

Phys. Rev. A vol. 76, 023616 (2007)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.76.023616

A vortex in a superfluid gas inside an optical lattice can behave as a massive particle moving in a periodic potential and exhibiting quantum properties. In this Letter we discuss these properties and show that the excitation of vortex motions in a two-dimensional lattice can lead to striking measurable changes in its dynamic response. It would be possible by means of Bragg spectroscopy to carry out the first direct measurement of the effective vortex mass, the pinning to the underlying lattice, and the dissipative damping.

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