Systems and methods for calibrating the elements of a quantum processor
AssigneeD-Wave Systems Inc.
InventorRichard G. Harris
Life of this patent
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Abstract
Systems and methods for improving calibration procedures in a quantum processor architecture are described. For example, a dedicated calibration signal source is built into the architecture of the quantum processor for use during calibration. A single calibration signal source is communicatively coupled to many devices in the quantum processor architecture to provide an absolute calibration signal against which various parameters, responses, and/or behaviors of the many devices may be calibrated, either in series or in parallel. The use of a calibration signal source may reduce the time required to calibrate the elements of a quantum processor and/or improve the accuracy/precision of such calibrations.
Claims28
A quantum processor comprising:
- a plurality of devices, wherein at least a first device in the plurality of devices has a determinable parameter, and wherein the plurality of devices includes a plurality of qubits;
- a calibration signal source that is communicatively coupleable to at least the first device in the plurality of devices, wherein the calibration signal source provides a calibration signal;
- and
- a readout system that is communicatively coupleable to at least the first device in the plurality of devices, wherein the readout system reads out a signal that is dependent on both the calibration signal and the determinable parameter of the first device to determine a value for the determinable parameter of the first device.
A method of calibrating at least one device in a quantum processor, wherein the quantum processor comprises a plurality of devices including at least a first device having at least a first determinable parameter, a calibration signal source that is communicatively coupleable to the at least a first device, and a readout system that is communicatively coupleable to the at least a first device, the method comprising:
- applying a calibration signal to the quantum processor via the calibration signal source;
- communicatively coupling at least a portion of the calibration signal from the calibration signal source to the first device;
- reading out a signal that is dependent on both the calibration signal and the first determinable parameter of the first device via the readout system;
- and
- determining a value for the first determinable parameter of the first device based at least in part on the signal that is read out via the readout system.
Dependencies are inferred from the claim text.