Unitarity as Preservation of Entropy and Entanglement in Quantum Systems

TitleUnitarity as Preservation of Entropy and Entanglement in Quantum Systems
Publication TypeJournal Article
Year of Publication2006
AuthorsHulpke, F, Poulsen, U, Sanpera, A, Sen(De), A, Sen, U, Lewenstein, M
JournalFoundations of Physics
Volume36
Issue4
Pagination477–499
Date Published04/2006
Abstract

Abstract The logical structure of Quantum Mechanics (QM) and its relation to other fundamental principles of Nature has been for decades a subject of intensive research. In particular, the question whether the dynamical axiom of QM can be derived from other principles has been often considered. In this contribution, we show that unitary evolutions arise as a consequences of demanding preservation of entropy in the evolution of a single pure quantum system, and preservation of entanglement in the evolution of composite quantum systems. 6

URLhttp://www.springerlink.com/content/tjg6r668u462848r/fulltext.pdf
DOI10.1007/s10701-005-9035-7
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