David Deutsch

David German ( born 1953 in Haifa) is an Israeli- British physicist in the field of quantum information theory.

Life

German studied mathematics and physics at Cambridge, Oxford and Austin and since 2009, holds a chair at the University of Oxford. He was awarded the Dirac Prize in 1998 for his work on quantum computers, among other things, about how these machines could be realized by quantum gates.

German is one of the most famous representatives of the so-called many-worlds interpretation of quantum mechanics. From the double-slit experiment of quantum mechanics attracts German in his book The Fabric of Reality, on this basis to conclude that parallel universes very concrete influence the universe, such as the intensity distribution of the photons in the double slit experiment, where individual particles produce an interference pattern without visible interaction partners. The partners were invisible particles of other universes, even if these parallel universes are extremely difficult to access otherwise.

His analysis of time travel and related logical problems comes to the suggestion that it would have to be necessarily traveled not only in time but also in a " parallel universe "; the time traveler, which rises in the time machine, and those who made ​​this gets out, it would not be the same. In addition, he also evaluates the quantum computers ascribed ability, certain NP problems such as the factoring problem to be solved in polynomial time, as strong evidence for the existence of parallel universes, which provide the necessary computing power by the interference with the universe at your disposal.

His work style is idiosyncratic, although he has his own office at the Mathematics Department, he works at home. In his book The Physics of knowledge of the world it represents a hypothesis about a physical definition of life.

According to him, the German - Jozsa algorithm is named.

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