Hybrid Quantum Circuits Laboratory (HQC)

Welcome!

In the Hybrid Quantum Circuit (HQC) group, we study experimentally hybrid superconductor/semiconductor devices implemented with electrostatically defined quantum dots (QDs) interacting with high impedance compact microwave resonators.

We would like to investigate new solutions to coherently interconnect different types of quantum objects together and exchange quantum information between microwave superconducting circuits, spin and charge degrees of freedom of electrons, and holes confined in semiconducting quantum dots.

By promoting the interaction of quantum systems defined by very distinct degrees of freedom, we will build unique and more complex but very versatile systems that allow exploring light-matter interaction in novel unconventional regimes.

The research activity on hybrid quantum technology presents very interdisciplinary aspects, as it requires expertise in different research fields: (a) Quantum transport in low dimension systems; (b) Spin and charge qubits in gate-defined semiconductor QDs; (c) cQED with superconducting qubits and multimode high impedance technology.
While both superconducting and semiconducting quantum hardware presents a strong potential on their own, we would like to explore novel opportunities emerging at the intersection between them in the context of quantum computing and analog quantum simulation.

This novel hybrid approach attracts high interest in the community, given its versatility. Its experimental success will open new research paths at the interface between semiconductor and superconducting quantum technology. The long-term ambition of our research activity is to coherently merge the two platforms to significantly broaden the range of problems that the solid-state quantum information hardware can address and propose new strategies and solutions for quantum information technology.