Breakdown of adiabaticity when loading ultracold atoms in optical lattices

2009/02/06 by Jakub Zakrzewski, Dominique Delande
Physics and Astronomy · #Atom (system on chip) #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Ground state #Lattice (music) #Mott insulator #Neutron #Optical lattice #Physics #Quantum #Quantum many-body systems #Quantum mechanics #Quasiperiodic function #Superfluidity #Theoretical and Computational Physics #Ultracold atom #Ultracold neutrons #cond-mat.dis-nn #cond-mat.other

paper · pdf · doi:10.1103/physreva.80.013602

published as Phys. Rev. A 80, 013602(2009) · 4pp, 3 figs

arxiv created 2009/02/06 · openalex publication_date 2009/07/07 · arxiv updated 2015/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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.

Citations

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