The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2025
Filed:
Dec. 10, 2021
Amazon Technologies, Inc., Seattle, WA (US);
Kyungjoo Noh, Pasadena, CA (US);
Christopher Chamberland, Pasadena, CA (US);
Harald Esko Jakob Putterman, Malibu, CA (US);
Oskar Jon Painter, Sierra Madre, CA (US);
Fernando Brandao, Pasadena, CA (US);
Andrew Joseph Keller, San Francisco, CA (US);
Patricio Arrangoiz Arriola, San Francisco, CA (US);
Thomas Scaffidi, Kensington, CA (US);
Menyoung Lee, Ithaca, NY (US);
Matthew Matheny, Diamond Bar, CA (US);
Colm Andrew Ryan, Arcadia, CA (US);
Prasahnt Sivarajah, Pasadena, CA (US);
Connor Hann, New Haven, CT (US);
Arne Grimsmo, Pasadena, CA (US);
Joseph Kramer Iverson, Pasadena, CA (US);
Ashley James Milsted, Pasadena, CA (US);
Amazon Technologies, Inc., Seattle, WA (US);
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.