Delft-based FrostByte has secured €1.3 million in funding from InnovationQuarter Capital, Graduate Ventures, Paeonia Group, UNIIQ, and an angel investor to advance cryogenic electronics for quantum computing. Founded in 2025 by CEO James Kroll and CTO Luc Enthoven, the TU Delft and QuTech spin-off will use the investment to expand its team, scale production of cryogenic switches, and develop integrated cryo-CMOS chips. The company addresses a critical bottleneck in quantum computing by relocating control electronics inside dilution refrigerators, operating at near-absolute-zero temperatures, making quantum systems more compact, energy-efficient, and scalable.
In-Depth:
FrostByte, a Delft-based startup developing cryogenic electronics solutions for quantum technologies, has raised €1.3 million in funding from InnovationQuarter Capital, Graduate Ventures, Paeonia Group, UNIIQ and an angel investor. With this investment, Graduate Ventures reaches a milestone, marking its 80th investment
The company plans to utilize this capital to further expand its team, scale production of cryogenic switches and develop integrated cryo-CMOS chips for the next generation of quantum systems.
James Kroll, CEO and co-founder of FrostByte: “With this investment, we can further develop our technology towards manufacturable cryo-electronics for the global quantum indusattempt.”
Founded in 2025, FrostByte is led by founders James Kroll (CEO) and Luc Enthoven (CTO), and is scientifically supported by Fabio Sebastiano and Masoud Babaie. Both advisors are pioneers in cryo-CMOS technology with decades of research experience, now applied commercially.
FrostByte is a spin-off from TU Delft and QuTech. It focutilizes on cryogenic integrated circuits (ICs) and specialised control electronics for quantum computing.
The company states that it addresses a key bottleneck in quantum computing. Before quantum computers can be scaled up, a crucial infrastructure issue requireds to be resolved: managing millions of qubits without cautilizing system overloads due to excessive cabling, heat, and external electronics.
The Delft-based startup claims to be developing cryo-electronics that address exactly this challenge. The company develops technology that brings control infrastructure closer to the quantum processor itself, laying the foundation for a new generation of scalable quantum systems.
“Quantum processors operate at temperatures close to absolute zero. In current systems, a large part of the control electronics remains outside the cryogenic environment, meaning that every additional qubit leads to more connections, complexity and heat generation. FrostByte relocates part of that control electronics into the dilution refrigerator itself, utilizing specialised cryo-CMOS technology designed to operate at extremely low temperatures. In doing so, the company is developing a new generation of cryogenic control electronics that create quantum systems more compact, energy-efficient and scalable,” explained the company.
