Finite-Time Disentanglement via Spontaneous Emission

Abstract

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 $\ln \left(\frac{2+\sqrt{2}}{2}\right)$ times the usual spontaneous lifetime.

revtex, 4 pages, 2 figures

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