Google’s new Willow chip has successfully solved a problem in five minutes that would take a classical computer longer than the history of the universe to complete. In a paper published in Nature on Monday, Google confirmed that it had found a way to string together the chip’s qubits to reduce error rates as the number of qubits increases. Additionally, the company can now correct errors in real-time, marking a key step towards making quantum machines practical. “We are past the break-even point,” said Hartmut Neven, who leads Google Quantum AI.
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Despite some competitors producing chips with a higher number of qubits, Google’s focus remains on reliability. Anthony Megrant, chief architect for Google Quantum AI, explained, “If we have a good idea, we want somebody on the team to be able to get that into the clean room and into one of these cryostats as fast as possible, so we can get lots of cycles of learning.” Google’s new dedicated fabrication facility for Willow chips accelerates future production. With these developments, Google also responded to 2019 criticisms, asserting that even under ideal conditions, classical computers would need a billion years to match the performance of Willow.
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