Accession Number:

ADA243482

Title:

Atom Wave Interferometer

Descriptive Note:

Final rept. 1 Dec 88-30 Nov 91,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS

Personal Author(s):

Report Date:

1991-12-11

Pagination or Media Count:

6.0

Abstract:

The biggest accomplishment during the current grant period was the demonstration of a three grating interferometer for atoms--the first true atom interferometer reported in the literature. Our interferometer consists of three equally spaced transmission diffraction gratings which function respectively much like the beam splitter, mirrors, and beam combiner in a diamond shaped Mach-Zender interferometer. This is a well known design whose general advantages have been eloquently extolled and which has been demonstrated with light, neutrons and x rays. For atoms it can be realized either with matter amplitude transmission gratings or light phase gratings, but we elected to pursue the use of the more robust matter gratings. Our matter grating interferometer differs from most optical and neutron interferometers in that the interference is detected as a spatial variation of particle density at the third grating.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE