Bose-Einstein Condensates in Optical Quasicrystal Lattices

Details Bose-Einstein Condensates in Optical Quasicrystal Lattices Bose-Einstein Condensates in Optical Quasicrystal Lattices

2005-02-22

arxiv.org/abs/cond-mat/0502529v3

Physical Review A 72 (2005) 053607

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevA.72.053607

We analyze the physics of Bose-Einstein condensates confined in 2D quasi-periodic optical lattices, which offer an intermediate situation between ordered and disordered systems. First, we analyze the time-of-flight interference pattern that reveals quasi-periodic long-range order. Second, we demonstrate localization effects associated with quasi-disorder as well as quasiperiodic Bloch oscillations associated with the extended nature of the wavefunction of a Bose-Einstein condensate in an optical quasicrystal. In addition, we discuss in detail the crossover between diffusive and localized regimes when the quasi-periodic potential is switched on, as well as the effects of interactions.

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