Quantum computers, which use atomic and subatomic rules, have the potential to revolutionize fields like drug discovery, cryptography, finance, and supply-chain logistics. However, progress in building these computers depends on the ability to handle noise, which is extremely vulnerable to disturbances like heat-generated photons, random signals, or physical vibrations. Researchers are working on applications that could use noisy circuitry in the near future, and theoretical and experimental breakthroughs have shown promise in suppressing, mitigating, and cleaning up quantum errors. Even skeptics are being won over by quantum computing, with University of Helsinki professor Sabrina Maniscalco working on designing improved versions of light-activated cancer drugs that are effective at lower concentrations and activated by less harmful light. This breakthrough moment comes after over a decade of disappointment for researchers building and running real-world quantum computers.