Quantum-resonance ratchet in a kicked Bose-Einstein condensate

Chun Lei Qu, Qing Zhao

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The dynamical evolution of a periodically kicked Bose-Einstein condensate was investigated by simulation. Emphasis was placed on the influence of the nonlinear interaction between atoms on the quantum-resonance ratchet effect. It was found that weak nonlinear interaction reduces the ratchet effect while the strong nonlinear interaction causes the ratchet current to disappear or even reversed. The ratchet effect under high-order quantum resonance conditions was further studied. The ratchet effect is not obvious in this case and can be easily destroyed by the noise of the kicking potential period.

Original languageEnglish
Pages (from-to)4390-4395
Number of pages6
JournalWuli Xuebao/Acta Physica Sinica
Volume58
Issue number7
StatePublished - Jul 2009

Keywords

  • Bose-Einstein Condensate (BEC)
  • Quantum chaos
  • Quantum resonance
  • Ratchet effect

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