Breakdown of adiabaticity when loading ultracold atoms in optical lattices

Jakub Zakrzewski and Dominique Delande
Phys. Rev. A 80, 013602 – Published 7 July 2009

Abstract

Realistic simulations of current ultracold atom experiments in optical lattices show that the ramping up of the optical lattice is significantly nonadiabatic, implying that experimentally prepared Mott insulators are not really in the ground state of the atomic system. The nonadiabaticity is even larger in the presence of a secondary quasiperiodic lattice simulating “disorder.” Alternative ramping schemes are suggested that improve the adiabaticity when the disorder is not too large.

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  • Received 6 February 2009

DOI:https://doi.org/10.1103/PhysRevA.80.013602

©2009 American Physical Society

Authors & Affiliations

Jakub Zakrzewski1,2 and Dominique Delande2

  • 1Instytut Fizyki imienia Mariana Smoluchowskiego and Mark Kac Complex Systems Research Center,Uniwersytet Jagielloński, ulica Reymonta 4, PL-30-059 Kraków, Poland
  • 2Laboratoire Kastler-Brossel, UPMC, ENS, CNRS, 4 Place Jussieu, F-75005 Paris, France

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Issue

Vol. 80, Iss. 1 — July 2009

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