Rohan Paul

Google achieved a new level in quantum computing. Says it has cleared a bottleneck researchers have flagged since 2004. Quantum computers need single-use “magic states” to run the operations that put them beyond ordinary computers. Making clean ones is so costly that some estimates say it could take up to 95% of a machine’s capacity. Google’s new method checks each state and throws out flawed attempts, cutting errors about 40x on its 105-qubit Willow chip. The surviving states reached 99.99% accuracy, a record by Google’s count, in work published in Science today. Only 8% of attempts survived the filter, and the method still has to work at much larger scale. Google has shown on real hardware 1 of the methods behind its estimate that RSA-2048 encryption could be broken with under 1M qubits. https://x.com/sundarpichai/status/2110804295352488143/video/1