Dispersion Compensation for Atom Interferometry

Tony D. Roberts, Alexander D. Cronin, Martin V. Tiberg, David E. Pritchard

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


A new technique for maintaining high contrast in an atom interferometer is used to measure large de Broglie wave phase shifts. Dependence of an interaction induced phase on the atoms’ velocity is compensated by applying an engineered counterphase. The counterphase is equivalent to a rotation, is precisely determined by a frequency, and can be used to measure phase shifts due to interactions of unknown strength. Phase shifts of 150 rad (5 times larger than previously possible) have now been measured in an atom beam interferometer, and we suggest that this technique can enable comparisons of atomic polarizability with precision of one part in 10000.

Original languageEnglish (US)
JournalPhysical review letters
Issue number6
StatePublished - 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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