China Develops Helium-Free Ultra-Cold Alloy for Quantum Computing and Military Applications

Chinese scientists have developed a rare-earth alloy, EuCo₂Al₉, that can achieve temperatures near absolute zero without helium-3. This technology enables compact cooling systems for superconducting quantum chips and advanced military electronics. The solid-state refrigeration module reached 106 mK and efficiently cools components using adiabatic demagnetization. The Chinese Academy of Sciences noted its potential for mass production, signaling advancements in helium-3 alternatives amid global interest.

Published Mar 22, 2026

Researchers in China have created a new rare-earth alloy, EuCo₂Al₉, capable of reaching temperatures close to absolute zero (-273°C) without helium-3, which is typically necessary for such cooling. The compact solid-state refrigeration module achieved 106 mK and employs adiabatic demagnetization (ADR) to cool itself and other components effectively.

AI-curated by Theia

This breakthrough may lead to portable cryogenic systems for quantum computing and military applications. The alloy's potential for mass production has been acknowledged by the Chinese Academy of Sciences, coinciding with increasing international interest in helium-3 alternatives, particularly following a recent DARPA call for similar technologies.