Patents by Inventor Thomas Scaffidi

Thomas Scaffidi 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 CODES IMPLEMENTED USING CAT DATA QUBITS AND TRANSMON ANCILLA QUBITS
    Publication number: 20260065112
    Abstract: Systems and methods for implementing a quantum code using cat qubits as data qubits and transmon qubits as ancilla qubits is disclosed. In some embodiments, a three-level transmon is used and Chi-matching is performed to determine dispersive coupling coefficients between the cat qubits and first and second excited states of the transmon qubits, wherein the dispersive coupling coefficients are used to perform gates between the cat data qubits and the transmon ancilla qubits. The Chi-matching determines the dispersive coupling coefficients such that the cat qubits are rotated in a same manner while performing the gates regardless as to whether a given transmon ancilla qubit remains in a second excited state or has decayed to a first excited state.
    Type: Application
    Filed: August 29, 2025
    Publication date: March 5, 2026
    Applicant: Amazon Technologies, Inc.
    Inventors: Kyungjoo Noh, Christopher Chamberland, Harald Esko Jakob Putterman, Oskar Jon Painter, Fernando Brandao, Andrew Joseph Keller, Patricio Arrangoiz Arriola, Thomas Scaffidi, Menyoung Lee, Matthew Matheny, Colm Andrew Ryan, Prasahnt Sivarajah, Connor Hann, Arne Grimsmo, Joseph Kramer Iverson, Ashley James Milsted
  • Quantum codes implemented using cat data qubits and transmon ancilla qubits
    Patent number: 12423606
    Abstract: Systems and methods for implementing a quantum code using cat qubits as data qubits and transmon qubits as ancilla qubits is disclosed. In some embodiments, a three-level transmon is used and Chi-matching is performed to determine dispersive coupling coefficients between the cat qubits and first and second excited states of the transmon qubits, wherein the dispersive coupling coefficients are used to perform gates between the cat data qubits and the transmon ancilla qubits. The Chi-matching determines the dispersive coupling coefficients such that the cat qubits are rotated in a same manner while performing the gates regardless as to whether a given transmon ancilla qubit remains in a second excited state or has decayed to a first excited state.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: September 23, 2025
    Assignee: Amazon Technologies, Inc.
    Inventors: Kyungjoo Noh, Christopher Chamberland, Harald Esko Jakob Putterman, Oskar Jon Painter, Fernando Brandao, Andrew Joseph Keller, Patricio Arrangoiz Arriola, Thomas Scaffidi, Menyoung Lee, Matthew Matheny, Colm Andrew Ryan, Prasahnt Sivarajah, Connor Hann, Arne Grimsmo, Joseph Kramer Iverson, Ashley James Milsted