Most quantum computers being developed around the world will only work at fractions of a degree above absolute zero. That requires multi-million-dollar refrigeration and as soon as you plug them into conventional electronic circuits they’ll instantly overheat.
But now researchers led by Professor Andrew Dzurak at UNSW Sydney have addressed this problem.
“Our new results open a path from experimental devices to affordable quantum computers for real world business and government applications,” says Professor Dzurak.
The researchers’ proof-of-concept quantum processor unit cell, on a silicon chip, works at 1.5 Kelvin—15 times warmer than the main competing chip-based technology being developed by Google, IBM, and others, which uses superconducting qubits.