Quantum computer breakthrough announcements are coming thick and fast. But for real-world use, is it really a matter of if rather than when? IT SEEMS AS IF a month cannot go by without a 'crucial hurdle' being overcome in quantum computing, bringing us 'a step closer' to realising a practical device. If you believe these pronouncements we are just a few years away from achieving this ambition: one that would render useless many of the encryption keys today used to secure data.
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