Multiplex readout system

Abstract

A circuit is presented that includes a first amplifier having an input, a transmission line having a first end and a second end. A first end of the transmission line is coupled to an input of the first amplifier and the plurality of channels. Each channel includes a plurality of resonators arranged to read out a plurality of qubits, respectively, and a readout line arranged to receive readout signals from the plurality of resonators. The readout line of each channel is coupled to the transmission line, and each channel is configured to output a respective signal in a respective frequency band different from the frequency bands of other channels of the plurality of channels.

Description

technical field

[0001] This topic deals with readout systems for qubits. Background technique

[0002] Large-scale quantum computers have the potential to provide fast solutions to certain types of difficult problems. Multiple challenges in designing and implementing quantum architectures to control, program, and maintain quantum hardware hinder the realization of large-scale quantum computing. Contents of the invention

[0003] This invention describes techniques for a multiplexed readout system for qubits.

[0004] In general, an innovative aspect of the inventive subject matter can be embodied in a circuit comprising: a first amplifier having an input; a transmission line having a first end and a second end, wherein the first end of the transmission line is coupled to an input to the first amplifier; and a plurality of channels, each channel comprising: a plurality of resonators arranged to respectively read out a plurality of qubits, and a readout line arranged to re...

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