Realization of the universal-NOT gate an
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C. Sias; F. Sciarrino; F. De Martini
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Article
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2003
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John Wiley and Sons
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English
β 248 KB
## Abstract An arbitrary quantum state cannot be βclonedβ perfectly, i.e. reproduced with βfidelityβ __F__ = 1 into __M__ > 1 states identical to the original by any conceivable physical device. The main root of this impossibility resides in the linearity of quantum mechanics. A second βquantum imp