Espoo’s Coherence Quantum raises €2.78 million to build infrastructure for larger quantum computers

Coherence Quantum, an Espoo-based quantum hardware company developing an integrated cryogenic signalling and control platform for future quantum computers, has raised €2.78 million in Seed funding to develop a new approach to the cryogenic infrastructure surrounding solid-state quantum processors.

The round was led by Helsinki-based early-stage investor Lifeline Ventures, with participation from technology entrepreneur Mårten Mickos.

Petteri Koponen of Lifeline Ventures said, “The quantum industry has proved that increasingly capable processors can be built. The next challenge is building the infrastructure that allows them to scale. Coherence Quantum is going after a fundamental part of that problem.

“They have an exceptional technical team with a clear view of where the industry is heading and the ambition to build far more than a single component. If quantum computers are going to scale, the architecture around the qubits has to scale with them, and we’re backing them to become a key part of how larger quantum computers are built.”

Coherence Quantum was founded in 2026 by Aashish Sah (CEO), Suman Kundu (CTO), and Erkki Soininen (CPO), and originated from research at Aalto University’s Quantum Computing and Devices group. The company is also supported by founding advisor Mikko Möttönen, a professor of quantum technology at Aalto University.

Sah is a quantum physicist specialising in superconducting qubits and their interaction with the electromagnetic environment. Kundu is an experimental quantum physicist who played a key role in building and setting up Aalto University’s 20-qubit Q20 quantum computer. Soininen holds a PhD in Physics and previously held a product leadership role at the cryogenics company Bluefors.

Coherence Quantum is developing an integrated cryogenic signalling and control platform for solid-state quantum computers, including superconducting and spin-qubit systems.

According to the company, its goal is to help quantum systems scale, enabling more qubits while maintaining the low-noise, high-coherence environment needed for reliable operation.

But it says that scaling quantum computers by adding more qubits creates another scaling problem: everything needed to control them must scale as well. “As quantum processors grow, more control and readout signals need to reach the quantum processing unit (QPU). Conventional approaches require more wiring and signal-conditioning hardware inside a system with very limited space and cooling power. At the same time, the qubit environment has to remain protected from thermal noise and other disturbances that can affect performance,” the Finnish startup explained. 

Coherence Quantum claims to be developing an integrated cryogenic signalling and control platform to address this scaling challenge. It notes that its first technologies focus on cryogenic signal conditioning, helping protect the environment around the qubit. From there, the company is developing higher-density signal interfaces and working towards bringing more control functionality inside the cryostat and closer to the quantum processing unit.

Sah said, “Quantum computers won’t scale by adding qubits alone. The infrastructure around them has to scale too. We’re starting with signal conditioning and building towards higher-density interfaces and, ultimately, more integrated cryogenic control. Our aim is to give quantum-computer builders an architecture that can support larger systems without wiring, cooling requirements, and complexity growing at the same rate.”

The company is building dedicated R&D, testing and manufacturing capabilities in Espoo, Finland, close to Aalto University and Finland’s growing quantum technology ecosystem. It plans to use the fresh capital to establish its lab in Espoo, build its first product prototypes and manufacturing process, continue R&D, and grow the team.

Starting with cryogenic signal-conditioning technologies, Coherence Quantum is working towards higher-density interfaces and increasingly integrated control inside the fridge. Its long-term ambition is to help establish a standardised blueprint for the cryogenic signalling and control stack, bringing its own technologies together with complementary technologies from across the quantum ecosystem.

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