Dispersion Compensation for Atom Interferometry

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

doi:10.1103/PhysRevLett.92.060405

Dispersion Compensation for Atom Interferometry

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

Physics

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

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 language	English (US)
Journal	Physical review letters
Volume	92
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.92.060405
State	Published - 2004

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General Physics and Astronomy

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10.1103/PhysRevLett.92.060405

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AB - 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.

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Dispersion Compensation for Atom Interferometry

Abstract

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