![]() Quantum machines will likely need thousands of qubits to manage such complex problems. Enthusiasts reckon that when these computers become powerful enough, perhaps in a decade or two, they might bring transformative effects in fields such as medicine and finance, neuroscience and AI. ![]() The ultimate goal of quantum computing, of course, is not to play Tetris but to outperform classical computers in solving problems of practical interest. ![]() Now QuEra claims to have made a device with far more qubits than any of those rivals. In 2020, IonQ unveiled a 32-qubit system that the company said was the “world’s most powerful quantum computer.” And just this week IBM launched its new 127-qubit quantum processor, which the press release described as a “minor miracle of design.” “The big news, from my perspective, is it works,” says Jay Gambetta, IBM’s vice-president of quantum computing. The same year, IBM launched its 53-bit quantum computer. In 2019, Google announced that its 53-qubit machine had achieved quantum supremacy-performing a task not manageable by a conventional computer-but IBM challenged the claim. ![]()
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