Power-aware transmission of quantum control signals

Abstract

A method for transmitting control signals from a classical interface of a quantum computer to a quantum processing unit (QPU) of the quantum computer is disclosed, where the quantum computer includes a plurality of communication channels between the classical interface and the QPU. The method includes receiving, at a central processing unit (CPU) of the classical interface, a digital control signal describing a quantum circuit to be performed by the QPU; compressing, at the CPU, the digital control signal using a preselected compression scheme; generating, at the CPU, a sequence staggering configuration indicating one or more delays to be applied to transmission of the compressed digital control signal and a map indicating a number of bits to be transmitted over each of the plurality of communication channels; outputting, from the CPU to a programable logic unit of the classical interface, the compressed digital control signal, the sequence staggering configuration and the map; splitting, at the programable logic unit, the compressed digital control signal into one or more sub-streams using the map and sequence staggering configuration; and transmitting, from the programable logic unit to the QPU, the one or more sub-streams, wherein the sub-streams are transmitted with the one or more delays.