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      Entanglement of a single spin-1 object: An example of ubiquitous entanglement

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      Author
      Binicioǧlu, S.
      Can, M. A.
      Klyachko, A. A.
      Shumovsky, A. S.
      Date
      2007
      Source Title
      Foundations of Physics
      Print ISSN
      0015-9018
      Electronic ISSN
      1572-9516
      Publisher
      Springer New York LLC
      Volume
      37
      Issue
      8
      Pages
      1253 - 1277
      Language
      English
      Type
      Article
      Item Usage Stats
      133
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      103
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      Abstract
      Using a single spin-1 object as an example, we discuss a recent approach to quantum entanglement. [A.A. Klyachko and A.S. Shumovsky, J. Phys: Conf. Series 36, 87 (2006), E-print quant-ph/0512213]. The key idea of the approach consists in presetting of basic observables in the very definition of quantum system. Specification of basic observables defines the dynamic symmetry of the system. Entangled states of the system are then interpreted as states with maximal amount of uncertainty of all basic observables. The approach gives purely physical picture of entanglement. In particular, it separates principle physical properties of entanglement from inessential. Within the model example under consideration, we show relativity of entanglement with respect to dynamic symmetry and argue existence of single-particle entanglement. A number of physical examples are considered.
      Keywords
      Entanglement
      Nonlocality
      Quantum measurements
      Permalink
      http://hdl.handle.net/11693/23418
      Published Version (Please cite this version)
      http://dx.doi.org/10.1007/s10701-007-9149-1
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      • Department of Mathematics 614
      • Department of Physics 2299
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