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arXiv · 0911.1910

Entanglement Sudden Death in Band Gaps

Ying-Jie Zhang
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Abstract

Using the pseudomode method, we evaluate exactly time-dependent entanglement for two independent qubits, each coupled to a non-Markovian structured environment. Our results suggest a possible way to control entanglement sudden death by modifying the qubit-pseudomode detuning and the spectrum of the reservoirs. Particularly, in environments structured by a model of a density-of-states gap which has two poles, entanglement trapping and prevention of entanglement sudden death occur in the weak-coupling regime.

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Ying-Jie Zhang. 2009-11-10. Entanglement Sudden Death in Band Gaps. https://doi.org/10.1140/epjd%2Fe2010-00087-6

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