Gravity-induced Wannier-Stark ladder in an optical lattice

Details Gravity-induced Wannier-Stark ladder in an optical lattice Gravity-induced Wannier-Stark ladder in an optical lattice

2000-09-12

arxiv.org/abs/cond-mat/0009185v1

Physics

Condensed Matter

5 pages + 8 eps figures, submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.63.023607

We discuss the dynamics of ultracold atoms in an optical potential
accelerated by gravity. The positions and widths of the Wannier-Stark ladder of
resonances are obtained as metastable states. The metastable Wannier-Bloch
states oscillate in a single band with the Bloch period. The width of the
resonance gives the rate transition to the continuum.

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