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Quantum computing technology is maturing at a relentless pace, yet individualquantum bits are wired one by one. As quantum processors become more complex,they require efficient interfaces to deliver signals for control and readoutwhile keeping the number of inputs manageable. Digital electronics offerssolutions to the scaling challenge by leveraging established industrialinfrastructure and applying it to integrate silicon-based quantum devices withconventional CMOS circuits. Here, we combine both technologies at milikelvintemperatures and demonstrate the building blocks of a dynamic random accessarchitecture for efficient readout of complex quantum circuits. Our circuit isdivided into cells, each containing a CMOS quantum dot (QD) and a field-effecttransistor that enables selective readout of the QD, as well as charge storageon the QD gate similar to 1T-1C DRAM technology. We show dynamic readout of twocells by interfacing them with a single radio-frequency resonator. Our resultsdemonstrate a path to reducing the number of input lines per qubit and enableaddressing of large-scale device arrays.

A CMOS dynamic random access architecture for radio-frequency readout of quantum devices