IBM and HSBC used a quantum system to improve a complex process.

International Business Machines ( IBM 1.22% ) has been working on quantum computing technology for decades. The company's quantum computing roadmap calls for a demonstration of quantum advantage, where a quantum computer outperforms a classical computer, by 2026 through combining the two technologies. The first fault-tolerant quantum computer is expected by 2029, with IBM scaling up after that.

While large-scale quantum computers are still many years away, IBM and HSBC announced a significant quantum computing breakthrough on Thursday. Detailed in a recently submitted scientific paper and a press release on HSBC's website, the bank used IBM's quantum computers paired with standard techniques to improve a particul

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