Many-body effects in near-resonant Kapitza-Dirac diffraction

The nonlinear Pendellosung

K. J. Schernthanner, G. Lenz, Pierre Meystre

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We investigate the modifications of the Pendello$iuml-sung of near-resonant Kapitza-Dirac diffraction due to many-body effects. For the case of ''two-beam'' doppleron (velocity-tuned) resonances, we find that in the absence of dissipation, the population oscillations between diffraction orders, which are complete in the linear case, can either be decreased in frequency, or become partial, or even be completely suppressed, in which case the system evolves to a quasistationary state where the atoms are in a coherent superposition of their upper and lower excited states. The influence of spontaneous emission on these predictions is then studied by numerically solving the effective single-atom Hartree-Fock master equation of nonlinear atom optics. We find that spontaneous emission is not detrimental in weakly allowed transitions, in which case the predicted effects survive for several spontaneous lifetimes.

Original languageEnglish (US)
Pages (from-to)3121-3127
Number of pages7
JournalPhysical Review A
Volume51
Issue number4
DOIs
StatePublished - 1995

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spontaneous emission
atom optics
diffraction
atoms
dissipation
life (durability)
oscillations
predictions
excitation

ASJC Scopus subject areas

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

Cite this

Many-body effects in near-resonant Kapitza-Dirac diffraction : The nonlinear Pendellosung. / Schernthanner, K. J.; Lenz, G.; Meystre, Pierre.

In: Physical Review A, Vol. 51, No. 4, 1995, p. 3121-3127.

Research output: Contribution to journalArticle

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