Quantum computers have long promised to transform fields ranging from chemistry and materials science to cybersecurity. Yet one major obstacle has stood in the way: size. Most quantum machines today remain too small and fragile to tackle the complex problems researchers hope they will eventually solve.
A new study led by scientists at the University of California, Riverside suggests that hurdle may be easier to overcome than many believed. The research shows that future quantum computers could be built by linking many smaller quantum chips together, even when the connections between those chips are far from perfect.
The study found that modular quantum systems can still detect and correct errors even when the links connecting individual chips are up to ten times noisier than operations occurring inside each chip. The finding offers a practical path toward building larger, more powerful quantum computers using technology that already exists.
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