Irreversible decay of nonlocal entanglement via a reservoir of a single degree of freedom

Recently, it has been realized that nonlocal disentanglement may take a finite time as opposite to the asymptotic decay of local coherences. We find in this paper that a sudden irreversible death of entanglement takes place in a two atom optical Stern-Gerlach model. In particular, the one degree non...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2007-06, Vol.75 (6), Article 062120
Main Authors: Vaglica, A., Vetri, G.
Format: Article
Language:English
Subjects:
ATOMS
BELL THEOREM
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DEGREES OF FREEDOM
OPTICAL MODELS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
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Summary:Recently, it has been realized that nonlocal disentanglement may take a finite time as opposite to the asymptotic decay of local coherences. We find in this paper that a sudden irreversible death of entanglement takes place in a two atom optical Stern-Gerlach model. In particular, the one degree nondissipative environment here considered suddenly destroys the initial entanglement of any Bell's states vertical bar {phi}{sup {+-}}> superposition.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.75.062120