Adaptive learning for quantum circuits

A method comprising:

• determining a quantum circuit comprising a plurality of quantum logic gates;
• executing the quantum circuit to determine a first quantum circuit cost function output based on a set of input parameters;
• updating a learning rate parameter by:
• determining a gradient based on the set of input parameters;
• computing a second quantum circuit cost function output by providing the quantum circuit with an updated set of input parameters, wherein the updated set of input parameters is updated based on the gradient and a learning rate parameter;
• determining a comparison value based on the first quantum circuit cost function output and the second quantum circuit cost function output;
• in response to a determination that the comparison value does not satisfy a threshold, updating the learning rate parameter such that the comparison value satisfies the threshold, wherein the threshold is determined based on the gradient;
• and
• updating parameters of the plurality of quantum logic gates based on the updated learning rate parameter.

One or more tangible, non-transitory, machine-readable media storing instructions that, when executed by one or more processors, effectuate operations comprising:

• executing a quantum circuit comprising a plurality of quantum logic gates to determine a first quantum circuit output based on a set of input parameters;
• determining a gradient based on the set of input parameters;
• providing the quantum circuit with an updated set of input parameters to determine a second quantum circuit output, wherein the updated set of input parameters is determined based on a learning rate parameter, the gradient and the set of input parameters;
• determining a comparison value based on the first quantum circuit output and the second quantum circuit output;
• updating the learning rate parameter such that the comparison value satisfies a threshold;
• and
• updating parameters of the plurality of quantum logic gates based on the updated learning rate parameter.