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Quantum Simulators and Quantum Repeaters
Author(s) -
Pavičić Mladen
Publication year - 2000
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(200005)48:5/7<497::aid-prop497>3.0.co;2-t
Subject(s) - quantum network , quantum computer , quantum error correction , quantum entanglement , quantum technology , repeater (horology) , physics , quantum mechanics , quantum information , quantum sensor , quantum capacity , open quantum system , quantum , computer science , encoding (memory) , artificial intelligence
Two elements of quantum computation are considered: quantum computer logic and quantum repeater. It is shown that the quantum gate logic does have two different models and that it is therefore ambiguous. It is also shown that without additional conditions imposed on quantum gates one cannot arrive at a general quantum computer machine language. In absence of such conditions quantum entanglement remains a selection protocol which makes quantum computer equivalent to many photon intensity interferometry. As an example for such an entanglement we discuss a quantum optical repeater.