European Research Council funds Delft team to build scalable spin qubits over six years

European ERC Grant Fuels Delft’s Quest for Scalable Spin Qubits

The European Research Council (ERC) has approved a six‑year, multi‑million‑euro Synergy grant for a consortium of Delft University researchers, dubbed UniQ, to advance spin‑qubit hardware. The project builds on the Netherlands’ strong semiconductor expertise and aims to integrate qubits, materials, and control electronics on a single chip, moving the field toward fault‑tolerant quantum processors.

Integrated Architecture as a Path to Scale

UniQ will explore how nearby classical electronics affect qubit performance and how control signals degrade across interconnects. By testing these interactions early, the team hopes to design qubits that demand less power and simpler circuitry, a crucial step for dense, large‑scale arrays. The effort is led by Lieven Vandersypen (QuTech/TU Delft) and Menno Veldhorst, who stress that improving material uniformity can reduce calibration overhead and enable tighter integration of control hardware.

Materials and Device Engineering

Germanium‑based structures, overseen by Giordano Scappucci, will be engineered to provide a low‑noise environment for spin qubits while supporting on‑chip transistors. Precise control of purity and crystal structure is expected to minimise magnetic and electrical interference, making the qubits more reproducible and easier to operate with voltage‑pulse techniques developed by Fabio Sebastiano.

Toward Error‑Corrected Logical Qubits

A core goal is to demonstrate how moving qubits within an array can improve connectivity and reduce the overhead required for error‑correction codes. While no logical‑qubit numbers are claimed yet, the integrated test platform will allow the team to evaluate error‑correction schemes that need fewer physical qubits per logical qubit, laying groundwork for future fault‑tolerant processors.

Why This Funding Matters

Funding announcements do not deliver immediate performance metrics, but they signal confidence from Europe’s premier research agency in spin‑qubit scalability. The grant will support personnel, fabrication, and extensive testing, accelerating the transition from isolated qubits to a cohesive quantum‑classical system. As the field seeks diverse hardware approaches, the UniQ effort adds a valuable semiconductor‑centric perspective to the global quantum roadmap.

The story is based on the ERC announcement posted on the QuTech website.