Patents by Inventor Dennis Rätzel

Dennis Rätzel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Quantum gravimeters and gradiometers
    Patent number: 12242019
    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.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: March 4, 2025
    Assignees: The University of Nottingham, University of Vienna
    Inventors: Ivette Fuentes Guridi, Dennis Rätzel, Tupac Bravo Ibarra, David Edward Bruschi
  • QUANTUM GRAVIMETERS AND GRADIOMETERS
    Publication number: 20220171089
    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.
    Type: Application
    Filed: June 12, 2020
    Publication date: June 2, 2022
    Inventors: Ivette FUENTES, Dennis RATZEL, Tupac Bravo IBARRA, David Edward BRUSCHI