Superconducting qubits: principles, control/readout architectures, and cryoelectronic solutions

Superconducting qubits such as transmons are one of the most well-developed classes of quantum devices for building a quantum computer. We will describe the fabrication and operating principles of such qubits and discuss the requirements for their control and read-out electronics. In particular, the use of cryogenic CMOS circuits operating at 4 K is a promising approach to obtaining high-quality qubit control with reduced system complexity, and we will discuss the design and operation of such circuits.