Superconducting Digital Electronics for Controlling Quantum Computing Systems

Nobuyuki YOSHIKAWA  

IEICE TRANSACTIONS on Electronics   Vol.E102-C   No.3   pp.217-223
Publication Date: 2019/03/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.2018SDI0003
Type of Manuscript: INVITED PAPER (Special Section on Superconducting Electronics for Quantum Information Technologies)
qubit,  quantum computing,  single-flux quantum circuit,  adiabatic quantum flux parametron circuit,  superconducting integrated circuits,  

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The recent rapid increase in the scale of superconducting quantum computing systems greatly increases the demand for qubit control by digital circuits operating at qubit temperatures. In this paper, superconducting digital circuits, such as single-flux quantum and adiabatic quantum flux parametron circuits are described, that are promising candidates for this purpose. After estimating their energy consumption and speed, a conceptual overview of the superconducting electronics for controlling a multiple-qubit system is provided, as well as some of its component circuits.