Bluefors

Overview

Bluefors is the world's dominant manufacturer of dilution refrigerator (DR) systems, the cryogenic infrastructure required to cool superconducting and silicon spin-qubit quantum processors to operating temperatures near absolute zero — typically in the 10–20 millikelvin range. Founded in 2008 as a spin-out from Aalto University in Helsinki, the company has grown from a niche academic supplier into the critical infrastructure backbone of the global quantum computing industry. Virtually every major superconducting quantum computing program — IBM, Google, Intel, Rigetti, IQM, and dozens of national laboratories and research institutions — relies on Bluefors dilution refrigerator platforms. The company's commercial thesis is straightforward and powerful: as qubit counts scale, the cryogenic systems required to house and cool those processors must scale proportionally, and Bluefors is the established leader in that infrastructure layer.

Leadership

Technology

Bluefors builds dry dilution refrigerators — systems that achieve millikelvin temperatures using a closed-cycle pulse tube cooler rather than liquid helium baths, a significant operational advantage over wet systems in terms of maintenance burden and cost. The core refrigeration mechanism uses a mixture of helium-3 and helium-4 isotopes circulating through a dilution unit, enabling sustained base temperatures in the 7–15 mK range required to maintain superconducting qubit coherence. Bluefors systems are distinguished by their mechanical stability, low vibration characteristics (critical for qubit coherence), modular wiring infrastructure, and the ability to integrate large numbers of microwave coaxial lines and filtered wiring harnesses needed to control and read out hundreds of qubits simultaneously. The company has invested heavily in scaling the internal volume and wiring density of its systems to keep pace with the quantum industry's qubit scaling roadmaps.