Many-body dipole-dipole interactions between excited Rb atoms probed by wave packets and parametric four-wave mixing

F. Shen, J. Gao, A. A. Senin, C. J. Zhu, J. R. Allen, Z. H. Lu, Y. Xiao, James Gary Eden

Research output: Contribution to journalArticlepeer-review

Abstract

Dipole-dipole interactions between excited Rb atoms at long range (∼300a0-2150a0) have been observed with molecular wave packets and a coherent nonlinear optical process. Fourier analysis of the parametric four-wave mixing (PFWM) signal wave intensity produced in femtosecond pump-probe experiments demonstrates the appearance of sidebands associated with the Rb 7s-5d5/2 quantum beating frequency of ∼18.3THz. Calculations show that the observed sideband splittings and Fourier domain profiles result from multiple atom, dipole-dipole interactions, and ensembles comprising five or fewer Rb (7s, 6p) atoms account for virtually all of the data.

Original languageEnglish (US)
Article number143201
JournalPhysical review letters
Volume99
Issue number14
DOIs
StatePublished - Oct 5 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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