In a SMALL shop in the eastern Chinese city of Hefei, one of the rarest pieces of technology in the world is on display. The quantum computer in the showroom of Origin, a Chinese startup, looks ready to be plucked from the shelf and fired up. Only 20 such devices are produced globally each year. It is unclear what in Origin’s showroom is for sale, but none of it is supposed to be seen by foreigners. During your correspondent’s visit, which was agreed on in advance, the company panicked at the sight of a foreigner, abruptly cancelled interviews and notified the police.
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