This is a massive breakthrough for the quantum race! 🇨🇳
Chinese scientists have just unveiled a new rare earth alloy (EuCo2Al9) that can reach near absolute zero temperatures without using a single drop of Helium-3.
Why this matters:
For decades, cooling quantum chips required Helium-3—a rare isotope sourced almost exclusively from nuclear weapons programs in the US and Russia. China just bypassed that entire supply chain bottleneck.
The "China Solution" vs. DARPA:
The Tech: Instead of liquid dilution, they’re using Adiabatic Demagnetisation Refrigeration (ADR). It’s a solid-state cooling method with no moving parts.
The Breakthrough: Traditionally, these materials were bad at "sharing" the cold. This new alloy has thermal conductivity 10–100x higher than previous materials, making it a portable, high-efficiency "mini-fridge" for quantum tech.
The Timing: DARPA (US Defense Research) issued an urgent call for this exact technology in late January. Less than two weeks later, the Chinese Academy of Sciences published their success in Nature.
The Stats:
Record Low: Achieved 106 millikelvin (that's roughly −273∘C).
Efficiency: Thermal conductivity is 1 to 2 orders of magnitude better than traditional magnetic cooling materials.
Portability: This paves the way for compact quantum computers and more efficient cooling for deep-space exploration.
Is the era of massive, room-sized quantum refrigerators coming to an end?
Mar 17
at
9:12 AM
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