SFQ Circuits for Quantum Computing

Quantum computing is a novel approach to computation that can provide a significant speedup of computationally hard tasks by using special quantum algorithms. Significant scaling of the many cohesive components within a quantum computing system is necessary to achieve quantum advantage for practical tasks. An essential element of any quantum computer is the control and measurement system. Classical superconductive electronics and SFQ circuits in particular can be interfaced with superconductive quantum systems. The performance of SFQ control circuits in terms of fidelity and noise is currently approaching the state-of-the-art as set by conventional control methods. Classical superconductive circuits can be instrumental in the transition to larger scale quantum computers. SFQ circuits can enhance these systems by providing fast, repeated measurements, complex processing, and controlled feedback while introducing low noise and heat load.