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Time-domain multiple-beam atom interferometer

H. Hinderthür, F. Ruschewitz, N. Schaffrath, J. Lohe, K. Sengstock, Wolfgang A. Ertmer

Published May 3, 1998• 0 citations
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Atom interferometers that operate in the spatial domain through continuous measurement of an atomic beam provide benefits in the elimination of sensor dead time and reduced sensitivity to certain noise sources. Further improving its operation, time-domain control of a spatial-domain interferometer can provide necessary methods of error suppression and dynamic range improvement. We model numerically and experimentally demonstrate methods of time-domain control in a 3D-cooled atomic beam interferometer. We demonstrate suppression of magnetic-field-induced phase noise through rapid reversal of the direction of inertial sensitivity at a rate faster than the inverse interrogation time of the interferometer.

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Summary form only given.Atom interferometers have opened up new areas of fundamental and applied research. As well known from photon optics, multiple-beam interferometers offer an increased sensitivity on the relative phases between interfering waves. Very recently, first atomic multiple-beam interferometers were realized. These concepts are based on an atomic beam that is spatially split into coherent partial de Broglie waves, where the number of interfering waves is determined by the internal atomic multi-level scheme. We report on time-domain atomic interferometry within a two-level system.
Atom interferometers that operate in the spatial domain through continuous measurement of an atomic beam provide benefits in the elimination of sensor dead time and reduced sensitivity to certain noise sources. Further improving its operation, time-domain control of a spatial-domain interferometer can provide necessary methods of error suppression and dynamic range improvement. We model numerically and experimentally demonstrate methods of time-domain control in a 3D-cooled atomic beam interferometer. We demonstrate suppression of magnetic-field-induced phase noise through rapid reversal of the direction of inertial sensitivity at a rate faster than the inverse interrogation time of the interferometer.