Two-photon adiabatic passage in ultracold Rb interacting with a single nanosecond, chirped pulse

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Abstract

A semiclassical, four-level model of a nanosecond, chirped pulse interacting with all optically accessible hyperfine states in an ultracold alkali atom, e.g., the 85Rb, is analyzed aiming at population inversion within 5S1/2 electronic state. The nature of two-photon adiabatic passage performed by a single pulse having the bandwidth prior to chirping significantly narrower than the hyperfine splitting of 5S1/2 state is investigated in the framework of the dressed state picture. It is shown that two dressed states are involved in the adiabatic dynamics of population inversion. The excited state manifold appeared to play an important mediating role in the mechanism of population transfer.

Original languageEnglish
Article number194001
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume48
Issue number19
DOIs
StatePublished - 14 Oct 2015

Keywords

  • Raman transitions
  • adiabatic passage
  • avoided crossing
  • dressed states
  • ultracold alkali atoms

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