Heating dynamics of bosonic atoms in a noisy optical lattice

H. Pichler, J. Schachenmayer, A.J. Daley, P. Zoller

Research output: Contribution to journalArticle

30 Citations (Scopus)

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.
LanguageEnglish
Article number033606
Number of pages9
JournalPhysical Review A
Volume87
Issue number3
DOIs
Publication statusPublished - 5 Mar 2013

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heating
low frequencies
atoms
renormalization group methods
noise spectra
equations of motion
perturbation theory
lasers

Keywords

  • bosonic atoms
  • optical lattice
  • band-gap frequency

Cite this

Pichler, H. ; Schachenmayer, J. ; Daley, A.J. ; Zoller, P. / Heating dynamics of bosonic atoms in a noisy optical lattice. In: Physical Review A. 2013 ; Vol. 87, No. 3.
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Heating dynamics of bosonic atoms in a noisy optical lattice. / Pichler, H.; Schachenmayer, J.; Daley, A.J.; Zoller, P.

In: Physical Review A, Vol. 87, No. 3, 033606 , 05.03.2013.

Research output: Contribution to journalArticle

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