Patents by Inventor Phillip R. HEMMER

Phillip R. HEMMER 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).

  • Patent number: 11448676
    Abstract: Sensing the electric or strain field experienced by a sample containing a crystal host comprising of solid state defects under a zero-bias magnetic field can yield a very sensitive measurement. Sensing is based on the spin states of the solid-state defects. Upon absorption of suitable microwave (and optical) radiation, the solid-state defects emit fluorescence associated with hyperfine transitions. The fluorescence is sensitive to electric and/or strain fields and is used to determine the magnitude and/or direction of the field of interest. The present apparatus is configured to control and modulate the assembly of individual components to maintain a zero-bias magnetic field, generate an Optically Detected Magnetic Resonance (ODMR) spectrum (with or without optical excitation) using appropriate microwave radiation, detect signals based on the hyperfine state transitions that are sensitive to electric/strain fields, and to quantify the magnitude and direction of the field of interest.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: September 20, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: Danielle Ann Braje, Edward H. Chen, Phillip R. Hemmer
  • Publication number: 20200284828
    Abstract: Sensing the electric or strain field experienced by a sample containing a crystal host comprising of solid state defects under a zero-bias magnetic field can yield a very sensitive measurement. Sensing is based on the spin states of the solid-state defects. Upon absorption of suitable microwave (and optical) radiation, the solid-state defects emit fluorescence associated with hyperfine transitions. The fluorescence is sensitive to electric and/or strain fields and is used to determine the magnitude and/or direction of the field of interest. The present apparatus is configured to control and modulate the assembly of individual components to maintain a zero-bias magnetic field, generate an Optically Detected Magnetic Resonance (ODMR) spectrum (with or without optical excitation) using appropriate microwave radiation, detect signals based on the hyperfine state transitions that are sensitive to electric/strain fields, and to quantify the magnitude and direction of the field of interest.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 10, 2020
    Inventors: Danielle Ann Braje, Edward H. CHEN, Phillip R. HEMMER
  • Patent number: 10620251
    Abstract: Sensing the electric or strain field experienced by a sample containing a crystal host comprising of solid state defects under a zero-bias magnetic fields can yield a very sensitive measurement. Sensing is based on the spin states of the solid-state defects. Upon absorption of suitable microwave (and optical) radiation, the solid-state defects emit fluorescence associated with hyperfine transitions. The fluorescence is sensitive to electric and/or strain fields and is used to determine the magnitude and/or direction of the field of interest. The present apparatus is configured to control and modulate the assembly of individual components to maintain a zero-bias magnetic field, generate an Optically Detected Magnetic Resonance (ODMR) spectrum (with or without optical excitation) using appropriate microwave radiation, detect signals based on the hyperfine state transitions that are sensitive to electric/strain fields, and to quantify the magnitude and direction of the field of interest.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 14, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Danielle Ann Braje, Edward H. Chen, Phillip R. Hemmer
  • Publication number: 20170370979
    Abstract: Sensing the electric or strain field experienced by a sample containing a crystal host comprising of solid state defects under a zero-bias magnetic fields can yield a very sensitive measurement. Sensing is based on the spin states of the solid-state defects. Upon absorption of suitable microwave (and optical) radiation, the solid-state defects emit fluorescence associated with hyperfine transitions. The fluorescence is sensitive to electric and/or strain fields and is used to determine the magnitude and/or direction of the field of interest. The present apparatus is configured to control and modulate the assembly of individual components to maintain a zero-bias magnetic field, generate an Optically Detected Magnetic Resonance (ODMR) spectrum (with or without optical excitation) using appropriate microwave radiation, detect signals based on the hyperfine state transitions that are sensitive to electric/strain fields, and to quantify the magnitude and direction of the field of interest.
    Type: Application
    Filed: June 28, 2017
    Publication date: December 28, 2017
    Inventors: Danielle Ann Braje, Edward H. CHEN, Phillip R. HEMMER