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arXiv · 1305.7026

Time-evolution of entanglement and quantum discord of bipartite systems subject to 1/f^α noise

Claudia Benedetti·Matteo G. A. Paris·Fabrizio Buscemi·Paolo Bordone
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Abstract

We study the dynamics of quantum correlations for two non interacting qubits initially prepared in a maximally entangled state and then coupled with an external environment characterized by a noise spectrum of the form 1/f^α. The noise spectrum is due to the interaction of each qubit with a collection of N_f classical fluctuators with fixed switching rates. We find that, depending on the characteristic of the noise spectrum considered, both entanglement and quantum discord display either a monotonic decay or the phenomena of sudden death and revivals.

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Claudia Benedetti, Matteo G. A. Paris, Fabrizio Buscemi, Paolo Bordone. 2013-05-31. Time-evolution of entanglement and quantum discord of bipartite systems subject to 1/f^α noise. https://doi.org/10.1109/icnf.2013.6578952

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