The SuperICQ Project
Quantum computers operate at cryogenic temperatures to reduce noise and maintain quantum bits (qubits’) stability. Reaching their full potential will require control and readout components that consume minimal power, respond at high speed, and scale smoothly as systems grow in size. The EIC-funded SuperICQ project aims to develop a new type of transistor called a JoFET, which allows precise control of superconducting circuits while using very little power. The project uses graphene and standard manufacturing methods to build these advanced circuits on a large scale. These components allow faster and more reliable control of qubits. The project is laying the foundation for a new generation of supercomputers and scalable quantum technology.
(a) False-color optical microscope image of a JoFET in a four-probe configuration. (b) False-color SEM image of the channel with length = 150 nm between the source and drain electrodes, taken before gate deposition. (c) Three-dimensional schematic of the JoFET material stack.
Generalov et. al. Wafer-scale CMOS-compatible graphene Josephson field-effect transistors. Appl. Phys. Lett. 1 July 2024; 125 (1): 012602. https://doi.org/10.1063/5.0203515