Quantum technology

Quantum technology promises revolutionary use cases in sensors, chemistry, finance, and AI. However, the performance of quantum devices is still to be improved for most practical applications. You may be struggling with excess losses in quantum chips, scaling to higher-complexity circuits or control, or low signal-to-noise in your readout. 

VTT has a solution at hand, based on decades of experience in low-temperature electronics and silicon photonics. VTT’s excellence in quantum technology has been verified by being in three European Quantum Technology Flagship projects and in the national Centre of Excellence in Quantum Technology (QTF).

VTT has unique in-house technologies for the following platforms and their combinations: superconducting, photonic, and semiconducting devices. We provide a rapid route from research to small-scale industrial production, with a decades long track record in commercializing cutting edge technology like superconducting sensors.

Superconducting circuits are being developed at industrial scale with the wafer size approaching 200 mm. VTT has processes for the fabrication and measurement of coplanar waveguide resonators above a quality factor of a million which can be utilised together with high-coherence superconducting qubits. Our niobium Josephson junction process has been used to make near-quantum-limited microwave amplifiers with gigahertz bandwidth. VTT is developing scalable techniques for 3D chip integration such as superconducting through-silicon vias and flip-chip bonding.

Photonics in silicon waveguides have been extensively developed at VTT. VTT can offer a low loss silicon photonic platform for industrial and R&D customers through open-access multi-project wafer runs. This technology platform is being integrated with cryogenic environments and superconducting circuits, especially in relation to the control of single-flux quantum logic.

Complementary metal-oxide-semiconductor (CMOS) technology has been demonstrated at VTT in production of semiconducting quantum dots for quantum metrology and spin qubits. It also is a basis for cryogenic classical electronics (cryo-CMOS), which is a key quantum enabling technology.

We provide the following services: fabrication, process development, device modelling and design, device and systems characterisation, quantum metrology, quantum control solutions including 3D integration, and thermal engineering. 

VTT will become a leading foundry to produce quantum chips and to provide the full spectrum of quantum services including quantum computing and its practical use cases. We provide complex, multidisciplinary, and 3D integrated cryogenic quantum devices and communicate with them from room temperature with an optical interface. These will revolutionise several business areas such as finance, chemistry, and security.

• Building of Finland’s first quantum computer begins – VTT partners with quantum startup IQM
• Researchers from VTT and Aalto university developed a new detector that can become a game changer for quantum technology
• Modern cyber security needs quantum-safe methods – VTT to coordinate new quantum safety project
• VTT’s quantum computer acquisition granted EUR 20.7 million in funding
• VTT to acquire Finland’s first quantum computer – seeking to bolster Finland’s and Europe’s competitiveness
• New electronic cooling technology to enable miniaturization of quantum computers

Blogs

• If you had a quantum computer, what would you use it for?
• Quantum technology is the industry of the future – that is why we are now building expertise in Finland
• Entangled in Innovation - Confessions of an Innovation Manager in the World of Quantum
• Our quantum results climbed to the top of the world
• From threats to quantum-safe cryptography – how is digital trust built?
• VTT’s Antti Vasara: These five areas of exponential hope will create jobs, sustainable growth and strengthen competitiveness in Europe

• Monolithic integration of up to 40 GHz Ge photodetectors in 3μm SOI
• Open-access 3 μm SOI waveguide platform for dense photonic integrated circuits
• Dramatic size reduction of waveguide bends on a micron-scale silicon photonic platform
• Other silicon photonics publications
• A flux-driven Josephson parametric amplifier for sub-GHz frequencies fabricated with side-wall passivated spacer junction technology
• Nanobolometer with ultralow noise equivalent power
• Optical and electrical characterization of a large kinetic inductance bolometer focal plane array
• All-planar SQUIDs and pickup coils for combined MEG and MRI
• Unshielded SQUID Sensors for Ultra-Low-Field Magnetic Resonance Imaging
• Kinetic inductance magnetometer