A simple computer that marries the mind-boggling computing power of quantum mechanics with the ease of manipulating light has been built by researchers at the University of Rochester. The device proves that a specific quirk of atoms, which lets scientists conduct huge computations almost instantly, can be perfectly mimicked by light, which is much more practical to control than individual atoms. The result could be a computer that performs some tasks a billion times faster than today’s supercomputers, using relatively simple technology that’s already well understood.
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