Quantum Computing, Communication, and Simulation

Integrated digital system solution for superconducting quantum computing based on mK-generated single flux quantum pulse patterns for multi-qubit control

Thomas Ortlepp, Anna Reinhardt, Taghrid Haddad, Nobuyuki Yoshikawa

Published Mar 5, 2026• 0 citations

Abstract

Quantum technologies are today regarded as one of the key technologies with huge implications to technological, economic and social developments in the next decades. Among the different platforms, superconducting implementations represent one of the most promising and are therefore pursued by several research institutions but also by numerous high-tech companies. Current research focusses e.g. on scaling towards a large number of qubits needed for practical implementations of this technology. Amongst the various realizations, adiabatic quantum flux parametron (AQFP) circuits have shown lowest power dissipation reaching Landauer limit. The operation of AQFP circuits down to mK temperature has been recently demonstrated. We will present a new concept for a digital control circuit based on the microwave pulse patters generated by single flux quantum circuits operating at mK temperatures. We discuss the circuit operation and the integration together with superconducting qubits to a compact and scalable approach for multi-Qubit control by digital pulse patterns.

DOI: 10.1117/12.3084959

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