FrostByte Raises $1.4M for Quantum Cryo-Electronics

Jan de Vries · 2026-05-08

### A Big Chill for Quantum Computing FrostByte, a startup based in Delft, Netherlands, just raised $1.4 million (€1.3 million) to solve one of quantum computing's biggest headaches. And honestly, it's a cool problem—literally. Quantum processors need to operate at temperatures near absolute zero. That's colder than outer space. But here's the catch: most of the control electronics that run these processors sit outside the fridge. So every time you add a qubit, you add more cables, more heat, and more complexity. It's like trying to run a supercomputer from across the room using extension cords. ### The Funding Round The investment came from InnovationQuarter Capital, Graduate Ventures, Paeonia Group, UNIIQ, and an angel investor. For Graduate Ventures, this marked their 80th investment—a nice milestone. FrostByte plans to use the cash to expand its team, scale production of cryogenic switches, and develop integrated cryo-CMOS chips. These chips are designed to work at those extreme temps, bringing control electronics right into the dilution refrigerator with the quantum processor. ### What FrostByte Actually Does Think of FrostByte as the bridge between the quantum world and the real world. Quantum computers are incredibly powerful, but they're also incredibly fragile. Every qubit needs precise control signals, and those signals generate heat. Too much heat, and the whole system breaks down. FrostByte's solution is elegant: move the control electronics closer to the action. Their cryo-CMOS technology is built to operate at cryogenic temperatures, so it can sit right next to the quantum processor. This cuts down on cabling, reduces heat, and makes the whole system more compact and energy-efficient. ### The Team Behind the Tech Founded in 2025, FrostByte is led by CEO James Kroll and CTO Luc Enthoven. They're backed by scientific advisors Fabio Sebastiano and Masoud Babaie, both pioneers in cryo-CMOS technology with decades of research experience. The company is a spin-off from TU Delft and QuTech, two heavyweights in the quantum research world. So they've got serious academic pedigree behind them. ### Why This Matters for the Industry Quantum computing is still in its early days, but the potential is massive. We're talking about machines that could revolutionize drug discovery, climate modeling, and cryptography. But to get there, we need to scale up from a few dozen qubits to millions. That scaling challenge is where FrostByte comes in. Without better cryo-electronics, quantum computers will hit a wall. Too many cables, too much heat, too much complexity. FrostByte's technology could be the key that unlocks the next generation of quantum systems. ### The Bottom Line James Kroll put it simply: "With this investment, we can further develop our technology towards manufacturable cryo-electronics for the global quantum industry." In other words, they're not just building a lab experiment. They're building something that can be mass-produced and deployed at scale. And with $1.4 million in fresh funding, they're one step closer to making that happen.