Finite-time disentanglement via spontaneous emission

We show that under the influence of pure vacuum noise two entangled qubits become completely disentangled in a finite-time, and in a specific example we find the time to be given by ln((2+sqrt[2] / 2) times the usual spontaneous lifetime.

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Bibliographic Details
Published in:Physical review letters 2004-10, Vol.93 (14), p.140404.1-140404.4, Article 140404
Main Authors: TING YU, EBERLY, J. H
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Quantum mechanics
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Summary:We show that under the influence of pure vacuum noise two entangled qubits become completely disentangled in a finite-time, and in a specific example we find the time to be given by ln((2+sqrt[2] / 2) times the usual spontaneous lifetime.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.140404