Eliminating cold-collision frequency shifts

Kurt Gibble, Boudewijn J. Verhaar

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


A technique to cancel the frequency shift due to cold collisions of laser-cooled atoms is proposed. Results for future clocks based on Cs135 and Cs137 are presented. We find a Cs137 fountain clock can be operated with no cold-collision shift by adjusting the population ratios in the fountain, and it may also be possible for Cs135. This technique can also be applied to other phase-sensitive measurements using cold atoms, including atom interferometers.

Original languageEnglish (US)
Pages (from-to)3370-3373
Number of pages4
JournalPhysical Review A
Issue number4
StatePublished - 1995

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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