• Patent Title: Individual qubit excitation control
  • Application No.: US15774033
    Application Date: 2015-11-06
  • Publication No.: US10572815B2
    Publication Date: 2020-02-25
  • Inventor: Rami Barends
  • Applicant: Google LLC
  • Applicant Address: US CA Mountain View
  • Assignee: Google LLC
  • Current Assignee: Google LLC
  • Current Assignee Address: US CA Mountain View
  • Agency: Fish & Richardson P.C.
  • International Application: PCT/US2015/059484 WO 20151106
  • International Announcement: WO2017/078735 WO 20170511
  • Main IPC: G06N10/00
  • IPC: G06N10/00 G06F17/16
Individual qubit excitation control
Abstract:
Methods, systems, and apparatus for individual qubit excitation control. In one aspect, a method includes accessing a quantum system that comprises a plurality of qubits; a plurality of qubit frequency control lines, each qubit frequency control line corresponding to an individual qubit and controlling the frequency of the qubit; a driveline; a plurality of couplers, each coupler coupling a corresponding qubit to the driveline so that a plurality of qubits are coupled to the driveline; determining one or more qubits that require a rotation operation; for each qubit requiring a rotation operation: tuning the qubit frequency to the corresponding driveline frequency of the rotation operation; performing the rotation operation using a microwave pulse on the excitation drive; and tuning the qubit away from the driveline frequency of the rotation operation.
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