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Talbot-vonLau atom interferometry with cold slow potassium

Journal Article · · Physical Review A; (United States)
;  [1]
  1. Physics Department, University of California-Berkeley, Berkeley, California 94720 (United States)

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 Moire 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 Moire fringes.

OSTI ID:
5020724
Journal Information:
Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 49:4; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English