Patents by Inventor Daniel Keith

Daniel Keith 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).

  • Publication number: 20260090284
    Abstract: Quantum processing systems and methods for fabrication are disclosed. The quantum processing system includes a semiconductor substrate; a dielectric material forming an interface with the semiconductor substrate; a dopant dot formed in the semiconductor substrate, the dopant dot comprising one or more dopant atoms; and one or more electrons/holes confined to the dopant dot. The system further includes a means for providing a magnetic field, wherein the magnetic field is applied in a particular direction to a crystallographic axis of the semiconductor substrate such that a relaxation time of the electron/hole is maximized.
    Type: Application
    Filed: March 6, 2024
    Publication date: March 26, 2026
    Inventors: Yu-Ling Hsueh, Daniel Keith, Rajib Rahman, Yousun Chung, Michelle Yvonne Simmons, Samuel Keith Gorman, Md Serajum Monir
  • Publication number: 20240349626
    Abstract: Quantum processing element and method to perform logic operations on a quantum processing element are disclosed. The quantum processing element includes: a semiconductor, a dielectric material forming an interface with the semiconductor, a plurality of dopant dots embedded in the semiconductor, each of the dopant dots comprising one or more dopant atoms and one or more electrons or holes confined within the dopant dots, wherein spin of an unpaired electron or hole of each dopant dot forms at least one qubit. The method includes the step of: controlling orientation of nuclear spins of the one or more dopant atoms in a pair of dopant dots and/or controlling a hyperfine interaction between nuclear spins of one or more dopant atoms and electron or hole spins of the unpaired electron or hole in the pair of dopant dots to perform a quantum logic operation on a corresponding pair of qubits.
    Type: Application
    Filed: August 2, 2022
    Publication date: October 17, 2024
    Applicant: SILICON QUANTUM COMPUTING PTY LIMITED
    Inventors: Ludwik Kranz, Samuel Keith Gorman, Md Serajum Monir, Stephen Roche, Daniel Keith, Rajib Rahman, Michelle Yvonne Simmons
  • Publication number: 20230229955
    Abstract: A method for measuring the spin of an electron in a quantum dot that is tunnel coupled to a reservoir is disclosed. The method includes measuring a spin state of the injected electron while applying a ramped detuning for a time period.
    Type: Application
    Filed: December 22, 2022
    Publication date: July 20, 2023
    Applicant: Silicon Quantum Computing Pty Limited
    Inventors: Michelle Yvonne Simmons, Samuel Keith Gorman, Brandur Thorgrimsson, Ludwik Kranz, Daniel Keith, Yousun Chung
  • Publication number: 20050065826
    Abstract: Increased efficiency and lower cost job scheduling is provided by a system and method that optimizes for cost instead of makespan, and minimizes fluctuations in resource utilization. A schedule is constructed using a workflow scheduling system that includes a load leveler, a cost minimizer, and a manpower planner. The load leveler minimizes makespan, subject to resource limits, and then lowers the resource limits, repeating the process in order to create a flatter schedule. The cost minimizer generates an initial solution, and then incrementally improves it, using the manpower planner to evaluate the different possible solutions. The manpower planner calculates, for a given schedule, the optimal hire/fire decisions to minimize total cost.
    Type: Application
    Filed: December 11, 2001
    Publication date: March 24, 2005
    Inventors: Andrew Baker, Matthew Ginsberg, Tristan Smith, Daniel Keith, Andrew Parkes, Bryan Smith
  • Patent number: 4599004
    Abstract: A mixing and agitating device having an elongated container for holding liquid chemicals to be thoroughly mixed and dispensed has a pair of access holes for permitting entrance thereto, and a baffle structure midway within the container for separating same into two equal compartments. The baffle structure is provided with a plurality of six elongated apertures or slots, the upper three having the central one vertically mounted and the other two spaced on either side thereof at an angle of preferably 45.degree. from the vertical. The lower three slots have the central one mounted horizontally and the other two on either side thereof at an angle of approximately 45.degree. from the vertical. A modified embodiment is provided wherein the lower angled pair of slots are at an angle of 30.degree. from the vertical. However, the range of slot angles can be from 25.degree. to 55.degree. from the vertical.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: July 8, 1986
    Inventor: Daniel Keith