Materials

From wafer growth to fully characterized quantum devices: one team, one continuous process.

Growth & Fabrication

The NQCP Materials team serves as the central hub for device fabrication at NQCP, working closely with design and characterization groups to translate performance requirements into robust, repeatable process flows.

Our engineers leverage state-of-the-art cleanroom facilities at DTU Nanolab, the University of Copenhagen, and the POEM Technology Center, Denmark's first facility built to the 300 mm wafer standard in collaboration with RIBER. At the heart of the facility is ROSIE, a molecular beam epitaxy system capable of depositing atomic-scale layers with the precision, uniformity, and material purity required for advanced quantum and photonic devices. For hybrid and multi-chip devices, we use Flip chip bonding for both superconducting and photonic qubits, integrating separately fabricated chips into a single working stack.

Characterization

Following fabrication, devices enter a comprehensive characterization workflow spanning optical, structural, and electronic properties.

Automated optical probing systems support measurements from individual dies to full wafers, enabling extended unattended test campaigns across a broad wavelength range.

For structural characterization, our capabilities include electron microscopy, atomic force microscopy, X-ray diffraction, scanning tunnelling microscopy, focused ion beam (FIB), and transmission electron microscopy. Together, these techniques reveal material composition, interfaces, and crystal structure with atomic-scale resolution.

Electronic characterization ranges from wafer-scale electrical probing to cryogenic measurements in a dilution-free cryostat operating at 150 mK under magnetic fields of up to 5 T, with dozens of integrated DC and RF lines. A fleet of dilution refrigerators extends these capabilities, enabling parallel measurement of multiple qubit chips across the full range of quantum device characterization experiments.

By integrating growth, fabrication, and measurement within a single organization, we maintain the level of process control and reproducibility that advanced quantum technologies demand. This tight feedback loop transforms rigorous materials science into reliable quantum hardware.

The Team