hardware research

Useful quantum computers could be built with as few as 10,000 qubits, team finds

Useful quantum computers could be built with as few as 10,000 qubits, team finds

Curator's Take

This research represents a potential game-changer for the quantum computing timeline, dramatically lowering the bar from millions to tens of thousands of qubits needed for practical quantum advantage. The breakthrough comes from novel error correction techniques developed through collaboration between Caltech theorists and the startup Oratomic, suggesting that fault-tolerant quantum computers might arrive years sooner than previously expected. With current quantum systems already approaching the 1,000-qubit range, this 10,000-20,000 qubit target suddenly seems achievable within this decade rather than requiring another 20-30 years of development. The finding could accelerate investment and development across the quantum industry as companies now have a more realistic roadmap toward commercially viable quantum computers.

— Mark Eatherly

Summary

Quantum computers of the future may be closer to reality thanks to new research from Caltech and Oratomic, a Caltech-linked start-up company. Theorists and experimentalists teamed up to develop a new approach for reducing the errors that riddle today's rudimentary quantum computers. Whereas these machines were previously thought to require millions of qubits to work properly (qubits being the quantum equivalent to 1's and 0's in classical computers), the new results indicate that a fully realized quantum computer could be built with as few as 10,000 to 20,000 qubits. The need for fewer qubits means that quantum computers could, in theory, be operational by the end of the decade.