China launches mass production of ultra-pure silicon-28: a breakthrough for quantum computing
The China National Nuclear Corporation (CNNC) has announced the start of serial production of silicon-28 with an isotopic purity exceeding 99.99%. This event marks the first time in China's history that this material has been independently produced on a large scale — a step that directly impacts the quantum technology race.
Why is silicon-28 critically important?
Silicon-28 is an isotope devoid of nuclear spin, making it an ideal foundation for silicon-based quantum computers. Unlike ordinary silicon, which contains impurities of the silicon-29 isotope (which creates magnetic interference), ultra-pure Si-28 radically reduces noise levels in qubits. This increases coherence time — a key parameter determining the stability and accuracy of quantum computing.
In essence, mass production of silicon-28 solves one of the main engineering challenges in creating scalable quantum processors. Without such material, silicon qubits remain susceptible to decoherence, limiting their practical application. Now, China gains a strategic advantage: the ability to independently supply itself with this critically important resource, without relying on foreign imports.
Geopolitical and technological context
The CNNC announcement is not just scientific news. It is a signal that Beijing is accelerating its program to achieve technological sovereignty in the field of quantum computing. Given that quantum computers promise a revolution in cryptography, materials modeling, and artificial intelligence, control over the production of key components becomes a matter of national security.
For the cryptocurrency and blockchain industry, this also has long-term significance: the emergence of powerful quantum systems could threaten current encryption algorithms, including ECDSA used in Bitcoin. Mass production of silicon-28 brings closer the day when quantum computing ceases to be a laboratory curiosity.
My expert assessment: China is betting on the silicon platform, which is likely to become dominant in the quantum processor industry due to its compatibility with existing semiconductor infrastructure. Investors and developers should already be closely monitoring progress in this area — the transition to post-quantum cryptography may happen faster than many expect.