Ultra-sensitive inertial sensors via neutral-atom interferometry

Details Ultra-sensitive inertial sensors via neutral-atom interferometry Ultra-sensitive inertial sensors via neutral-atom interferometry

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nascp3046..215c&link_type=abstract

In NASA, Relativistic Gravitational Experiments in Space p 215-221 (SEE N90-19940 12-90)

Physics

Gravitation Theory, Gravitational Waves, Inertia Principle, Michelson Interferometers, Neutral Atoms, Drag Reduction, Electromagnetic Radiation, Equivalence, Matter (Physics), Precession, Precision, Spaceborne Experiments

Scientific paper

Upon looking at the various colossal interferometers, etc., discussed at this conference to test gravitational theory, one cannot avoid feeling that easier approaches exist. The use of low velocity, neutral atom matter waves in place of electromagnetic waves in sensitive inertial interferometer configurations is proposed. For applications, spacecraft experiments to sense a drag-free condition, to measure the Lense-Thirring precession, to measure the gravitomagnetic effect and/or the earth's geopotential (depending on altitude), and to detect long period gravitational waves are considered. Also, a terrestrial precision test of the equivalence principle on spin polarized atoms, capable of detecting effects of the 5th force is considered. While the ideas described herein are preliminary, the orders of magnitude are sufficiently tantalizing to warrant further study. Although existing proposed designs may be adequate for some of these experiments, the use of matter-wave interferometry offers reduced complexity and cost, and an absence of cryogenics.

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