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Talbot-vonLau atom interferometry with cold slow potassium

John F. Clauser and Shifang Li
Phys. Rev. A 49, R2213(R) – Published 1 April 1994
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Abstract

A dc hot thermal and an ac-modulated cold slow potassium beam copropagate and pass through an atom de Broglie–wave interferometer, consisting of a sequence of three microfabricated diffraction gratings. Talbot-vonLau interference fringes are formed and sensed by measuring transmission with a hot wire as a function of grating position. The hot beam produces diffraction-limited shadow Moiré fringes, while the longer de Broglie wavelength slow beam produces interference fringes with high visibility at the fifth and sixth spatial harmonics of the shadow Moiré fringes.

  • Received 30 August 1993

DOI:https://doi.org/10.1103/PhysRevA.49.R2213

©1994 American Physical Society

Authors & Affiliations

John F. Clauser and Shifang Li

  • Physics Department, University of California–Berkeley, Berkeley, California 94720

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Issue

Vol. 49, Iss. 4 — April 1994

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