Quantum gravimeters and gradiometers
Quantum gravimeters and gradiometers
A method of measuring an acceleration using one or more trapped BECs and at least two atomic field modes within those BECs is described. A density distribution of at least one of the one or more BECs is modified by the acceleration, which leads to a change of the field modes' time evolution. The method comprises: selecting two modes that are differently affected by the acceleration; and measuring the acceleration-induced difference; and using the measured acceleration-induced difference to infer the acceleration. Also described is a method of measuring a field gradient using one or more trapped BECs. Each of the trapped BECs has a density distribution, and at least two atomic modes within those BECs, wherein the density distributions of the one or more BECs are modified by the field, which leads to a change of the atomic modes' time evolution. The method comprises selecting two atomic modes that are differently affected by the field; and measuring a field-induced difference between the selected atomic modes; and using the measured field-induced difference to infer a gradient of the field.
US12242019B2
4 March 2025
Fuentes Guridi, Ivette
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Rätzel, Dennis
ab613c70-8628-405a-a01a-a19ec9fd8d86
Bravo, Tupac
7f9c92af-bc61-4922-9ea6-3f0c03479861
Bruschi, David Edward
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Fuentes Guridi, Ivette, Rätzel, Dennis, Bravo, Tupac and Bruschi, David Edward
(Inventors)
(2025)
Quantum gravimeters and gradiometers.
US12242019B2.
Abstract
A method of measuring an acceleration using one or more trapped BECs and at least two atomic field modes within those BECs is described. A density distribution of at least one of the one or more BECs is modified by the acceleration, which leads to a change of the field modes' time evolution. The method comprises: selecting two modes that are differently affected by the acceleration; and measuring the acceleration-induced difference; and using the measured acceleration-induced difference to infer the acceleration. Also described is a method of measuring a field gradient using one or more trapped BECs. Each of the trapped BECs has a density distribution, and at least two atomic modes within those BECs, wherein the density distributions of the one or more BECs are modified by the field, which leads to a change of the atomic modes' time evolution. The method comprises selecting two atomic modes that are differently affected by the field; and measuring a field-induced difference between the selected atomic modes; and using the measured field-induced difference to infer a gradient of the field.
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US12242019
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Published date: 4 March 2025
Identifiers
Local EPrints ID: 502577
URI: http://eprints.soton.ac.uk/id/eprint/502577
PURE UUID: d5a8089d-7907-43e9-ba84-97bc896c72c6
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Date deposited: 01 Jul 2025 16:37
Last modified: 21 Aug 2025 04:51
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Contributors
Inventor:
Dennis Rätzel
Inventor:
Tupac Bravo
Inventor:
David Edward Bruschi
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