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(alpha). 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.
Time-evolution of entanglement and quantum discord of bipartite systems subject to 1/f(alpha) noise / C. Benedetti, F. Buscemi, P. Bordone, M.G.A. Paris - In: Noise and Fluctuations (ICNF), 2013 22nd International Conference on[s.l] : IEEE, 2013. - ISBN 9781479906710. - pp. 313-316 (( Intervento presentato al 22. convegno International conference on noise and fluctuations : ICNF tenutosi a Montpellier nel 2013 [10.1109/ICNF.2013.6578952].
Time-evolution of entanglement and quantum discord of bipartite systems subject to 1/f(alpha) noise
C. Benedetti
;M.G.A. Paris
2013
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(alpha). 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.File | Dimensione | Formato | |
---|---|---|---|
06578952.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
260.08 kB
Formato
Adobe PDF
|
260.08 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.