Apparatus and Method for Synthesizing Quantum Controls
AssigneeThe John Hopkins University
InventorDennis G. Lucarelli
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Abstract
An example method for facilitating the generation of a control field for a quantum system is provided. The example method may include receiving quantum system experiment input parameters and generating a set of coefficients defining a plurality of controls. The plurality of controls may be provided as a weighted sum of basis functions that include discrete prolate spheroidal sequences. The example method may further include applying a gradient based optimization, synthesizing the plurality of controls, and configuring a waveform generator with the plurality of controls to enable the waveform generator to generate the control field.
Claims19
An apparatus for generating a control field for a quantum system comprising:
- digital processing circuitry;
- and
- a waveform generator configured to generate the control field for the quantum system based on a plurality of controls determined by the digital processing circuitry;
- wherein the digital processing circuitry is configured to:
- receive quantum system experiment input parameters including a quantum processor model representing the quantum system;
- generate a set of coefficients defining a plurality of controls based on the quantum processor model, the plurality of controls being provided as a weighted sum of basis functions, wherein the basis functions comprise discrete prolate spheroidal sequences;
- apply a gradient based optimization, wherein the gradient is computed with respect to the coefficients defining the plurality of controls;
- and
- synthesize the plurality of controls for provision to the waveform generator to generate the control field for the quantum system.
An apparatus comprising:
- digital processing circuitry;
- and
- a waveform generator configured to generate a control field for a quantum system;
- wherein the processing circuitry is configured to control the waveform generator to generate the control field by supplying a plurality of controls to the waveform generator;
- wherein the plurality of controls have been synthesized by applying a gradient based optimization on coeffiecients of a set of basis functions, wherein the basis functions comprise discrete prolate spheroidal sequences and wherein a complexity of the gradient determination is based on a bandwidth of a control field of the quantum system.
An method comprising:
- receiving quantum system experiment input parameters including a quantum processor model representing a quantum system;
- generating a set of coefficients defining a plurality of controls based on the quantum processor model, the plurality of controls being provided as a weighted sum of basis functions, wherein the basis functions comprise discrete prolate spheroidal sequences;
- applying a gradient based optimization, wherein the gradient is computed with respect to the coefficients defining the plurality of controls;
- synthesizing the plurality of controls for provision to a waveform generator to generate the control field for the quantum system;
- and
- configuring the waveform generator with the plurality of controls to enable the waveform generator to generate the control field.
Dependencies are inferred from the claim text.