Hybrid RF Superconductor-Semiconductor Parametric Amplifiers

We will build and characterize hybrid superconducting-semiconducting parametric amplifiers, which will enable electrically controlled and pumped, quantum limited amplifiers suitable for quantum computing applications.

This will be based on novel fabrication schemes, combining knowledge from microwave semiconductor technology with superconducting physics, integrating superconductors in highly optimized high frequency compatible transistor geometries.

We will pioneer new sets of superconductors which will enable highly transparent interfaces and large critical currents, while still being compatible with advanced semiconductor technology.

Direct electrical control of the supercurrent, at high frequencies will be demonstrated, which will be used as a basis for electrically pumped parametric amplifiers.

We aim at demonstrating quantum limited, magnetic field insensitive, low noise amplifiers, with higher gain and larger bandwidths as what is available in traditional superconducting implementations in three terminal configurations.We will explore the technology as a basis for electrically controlled non-reciprocal waveguides, which can enable key, magnet-free, elements for quantum processers such as isolators and circulators.

These elements can then directly be integrated with the parametric amplifiers, which can lead to new methods of integration of the read-out electronics for superconducting and spin-based quantum computers.