Heating dynamics of bosonic atoms in a noisy optical lattice

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Pichler, H. and Schachenmayer, J. and Daley, A.J. and Zoller, P. (2013) Heating dynamics of bosonic atoms in a noisy optical lattice. Physical Review A, 87 (3). 033606. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.87.033606)

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Abstract

We analyze the heating of interacting bosonic atoms in an optical lattice due to intensity fluctuations of the lasers forming the lattice. We focus in particular on fluctuations at low frequencies below the band-gap frequency, such that the dynamics is restricted to the lowest band. We derive stochastic equations of motion, and analyze the effects on different many-body states, characterizing heating processes in both strongly and weakly interacting regimes. In the limit where the noise spectrum is flat at low frequencies, we can derive an effective master equation describing the dynamics. We compute heating rates and changes to characteristic correlation functions both in the perturbation theory limit and using a full time-dependent calculation of the stochastic many-body dynamics in one dimension based on time-dependent density-matrix-renormalization-group methods.

ORCID iDs

Pichler, H., Schachenmayer, J., Daley, A.J. ORCID logoORCID: https://orcid.org/0000-0001-9005-7761 and Zoller, P.;
  • Item type:Article
    ID code:45148
    Dates:
    Date
    Event
    5 March 2013
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:15 Oct 2013 08:51
    Last modified:11 Nov 2024 10:31
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/45148
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