Abstract

As shown recently by Zawisky, Rauch, and Hasegawa in neutron interferometry [Phys. Rev. A 50, 5000 (1994)], the interference pattern obtained with a low-intensity particle beam is deeply modified when a selection is made of the time intervals between successive detected events. Experiments of the same type performed with a Stern-Gerlach interferometer using a metastable hydrogen atom beam are described. Results very similar to those of the neutron experiment are obtained, in particular a strong enhancement of the contrast when large time intervals are selected.

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