Quantum circuit assembly with a digital-to-analog converter and an array of analog memory cells

Abstract

An example quantum circuit assembly includes a quantum circuit component with a plurality of qubits operable by selectively applying control signals to various terminals of the qubits. The assembly further includes an array of analog memory cells, a DAC configured to sequentially generate analog values/signals to be stored in different ones of the analog memory cells, and a switching arrangement configured to selectively apply control signals to various ones of qubit terminals, where each control signal is applied by the switching arrangement electrically connecting an output terminal of a different analog memory cell of the array of analog memory cells to one of the qubit terminals. Performing digital-to-analog conversion ahead of performing qubit operations and storing results of the conversion in different analog memory cells allows pre-generating and storing analog voltages required for qubit operations that may be carried out during the qubit coherence time.