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arXiv · 0906.0704

Decay of entanglement in coupled, driven systems with bipartite decoherence

J. Li·G. S. Paraoanu
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Abstract

We analyze a system of two qubits embedded in two different environments. The qubits are coupled to each other and driven on-resonance by two external classical sources. In the secular limit, we obtain exact analytical results for the evolution of the system for several classes of two-qubit mixed initial states. For Werner states we show that the decay of entanglement does not depend on coupling. For other initial states with ``{\sf X}\rq\rq -type density matrices we find that the sudden death time displays a rich dependence on the coupling energy and state parameters due to the existence of processes of delayed sudden birth of entanglement.

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J. Li, G. S. Paraoanu. 2009-06-03. Decay of entanglement in coupled, driven systems with bipartite decoherence. https://doi.org/10.1140/epjd%2Fe2009-00247-9

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