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Decoherence, Disentanglement and Foundations of Quantum Mechanics

AIP Conf. Proc. -- December 3, 2007 -- Volume 962, pp. 108-117
QUANTUM THEORY: Reconsideration of Foundations—4; doi:10.1063/1.2827292

Issue Date: 3 December 2007

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Gregg Jaegera and Kevin Annb
aQuantum Imaging Laboratory and College of General Studies Boston University, Boston MA 02215, U.S.A.
bDepartment of Physics Boston University, Boston MA 02215, U.S.A.
Decoherence and disentanglement are phenomena central to quantum mechanics. Here, we consider the relative rates of decoherence and disentanglement in two-qubit, three-qubit, and two-qutrit systems when subject to pure dephasing noise alone, and a very recent result for d×d systems. Of particular interest is the specific counterintuitive effect related to the nonadditivity of such weak noises, known as Entanglement Sudden Death (ESD), in which the entanglement of a composite quantum system goes abruptly to zero in finite time, coherence only exponentially decaying. We discuss these results in the context of the foundations of quantum mechanics. ©2007 American Institute of Physics
Permalink: http://link.aip.org/link/?APCPCS/962/108/1
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KEYWORDS and PACS

Keywords
PACS
  • 03.65.Ta
    Foundations of quantum mechanics; measurement theory
  • 03.65.Ud
    Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.)
  • 03.65.Yz
    Decoherence; open systems; quantum statistical methods
  • 02.50.Cw
    Probability theory
  • 02.10.Yn
    Matrix theory
  • YEAR: 2007

PUBLICATION DATA

ISSN:
0094-243X (print)  
Publisher:
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