Chinese scientists have achieved a significant breakthrough in producing ultra-pure silicon-28, a material considered critical for building practical quantum computers, according to Global Times.
The advance, as reported by the state-run outlet, is notable because it addresses one of the central manufacturing challenges in quantum computing: making the production of this specialized material scalable.
Silicon-28 is a specific isotope of ordinary silicon — the same material that underpins nearly all modern electronics. What makes it special for quantum computing is what it lacks: impurities. Standard silicon contains a mix of isotopes, including silicon-29, whose atomic nuclei carry a magnetic property that disrupts the fragile quantum states — called qubits — that quantum computers depend on to function. Ultra-pure silicon-28, stripped of these disruptive atoms, allows qubits to remain stable far longer, which is essential for performing useful calculations.
The challenge until now has been producing silicon-28 at sufficient purity and volume for commercial chip manufacturing. According to Global Times, Chinese researchers have found a way to clear that hurdle and enable mass production.
China has been aggressively investing in quantum technology amid broader competition with the United States over advanced computing. A domestically mastered supply of quantum-grade silicon-28 would reduce reliance on foreign suppliers and potentially accelerate China's path to viable quantum hardware.
If the breakthrough holds up to independent scrutiny, it could mark a meaningful step toward making quantum computers manufacturable at scale — not just in the lab, but in the real world.