Measurements of diffusion resonances for the atom optics quantum kicked rotor

M. E.K. Williams, M. P. Sadgrove, A. J. Daley, R. N.C. Gray, S. M. Tan, A. S. Parkins, N. Christensen, R. Leonhardt

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


We present experimental observations of diffusion resonances for the quantum kicked rotor with weak decoherence. Cold caesium atoms are subject to a pulsed standing wave of near-resonant light, with spontaneous emission providing environmental coupling. The mean energy as a function of the pulse period is determined during the late-time diffusion period for a constant probability of spontaneous emission. Structure in the late-time energy is seen to increase with physical kicking strength. The observed structure is related to Shepelyansky's predictions for the initial quantum diffusion rates.

Original languageEnglish
Pages (from-to)28-33
Number of pages6
JournalJournal of Optics B: Quantum and Semiclassical Optics
Issue number1
Publication statusPublished - 2004 Jan


  • Kicked atoms
  • Laser-cooled atoms
  • Quantum chaos

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)


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