Full elimination of the gravity-gradient terms in atom interferometry

Abstract

The A. Roura technique was modified to eliminate all terms in the atom interferometer phase, which are linear in the gravity-gradient tensor. The full elimination occurs if all effective wave vectors are slightly changed. The full elimination technique would allow to relieve the synchronization requirements in the test of the Einstein equivalence principle. This technique also eliminates the error of the absolute gravity measurement associated with the gravity gradient terms. The error becomes three orders smaller and does not depend on the time delay between the Raman pulses. In addition, the new differential scheme is proposed to observe the gravity-gradient term independent on the atoms initial position and velocity.

4 pages, changed structure, corrected English

References in corpus (4)

• Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
• Effective inertial frame in an atom interferometric test of the equivalence principle
• Circumventing Heisenberg's uncertainty principle in atom interferometry tests of the equivalence principle
• Atom interferometer as a selective sensor of rotation or gravity

Cited by in corpus (3)

• Quantum test of the Universality of Free Fall using rubidium and potassium
• Systematic errors in high-precision gravity measurements by light-pulse atom interferometry on the ground and in space
• Newtonian gravitational constant measurement. All atomic variables become extreme when using a source mass consisting of 3 or more parts