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Rapid industrial progress in the past five decades has resulted in an enormous increase in computational speed, accompanied by the development of ever smaller physical devices and components. Computers in the late 1940s weighed 30 tons and occupied several thousand square metres. Today, microprocessors are a few square centimetres in size. If this pace of progress continues, information could soon be encoded in a few atoms, which could eventually lead to a shift from classical to quantum computation.
Plenio et al. (Tue,) studied this question.