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Sto caricando le informazioni... Menti, macchine e multiverso: alla ricerca del computer quantisticodi Julian Brown
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The traditional and ubiquitous digital computer has changed the world by processing series of binary ones and zeroes...very fast. Like the sideshow juggler spinning plates on billiard cues, the classical computer moves fast enough to keep the plates from falling off. As computers become faster and faster, more and more plates are being added to more and more cues. Imagine, then, a computer in which speed is increased not because it runs faster, but because it has a limitless army of different jugglers, one for each billiard cue. Imagine the quantum computer. Julian Brown's record of the quest for the Holy Grail of computing -- a computer that could, in theory, take seconds to perform calculations that would take today's fastest supercomputers longer than the age of the universe -- is an extraordinary tale, populated by a remarkable cast of characters, including David Deutsch of Oxford University, who first announced the possibility of computation in the Alice-in-Wonderland world of quantum mechanics; Ed Fredkin, who developed a new kind of logic gate as a true step toward universal computation; and the legendary Richard Feynm Non sono state trovate descrizioni di biblioteche |
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Google Books — Sto caricando le informazioni... GeneriSistema Decimale Melvil (DDC)004.1Information Computing and Information Computer science By Computer TypeClassificazione LCVotoMedia:
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I would have given the book a higher rating if it had stayed more focused on just quantum computing, but it ranges widely from the interpretations of quantum physics to quantum cryptography (nearly a quarter of the book). Its not that these sections were poorly written, just that they are somewhat ancillary to the book’s title. But where the author focuses just on quantum computing he does a good job in explaining the basic ideas. He covers quantum logic (Fredkin, Hadamard, and Toffoli gates) and potential designs for building a quantum computer. He also discusses a logic notation that can represent superpositions of qbits. This notion and some of the mathematics introduced in the chapters on cryptography were the most difficult areas of the book, but they can be skimmed without losing the major ideas being presented.
The last chapter is a catch all that covers nanotechnology, DNA computing, consciousness and the universe. Enjoyable chapter but covered in lots of other books (i.e. Michio Kaku’s "Visions"). ( )