Quantum correlations and decoherence dynamics for a qutrit–qutrit system under random telegraph noise

Quantum correlations and decoherence dynamics for a qutrit–qutrit system under random telegraph... We analyze the effect of a classical random telegraph noise on the dynamics of quantum correlations and decoherence between two non-interacting spin-qutrit particles, initially entangled, and coupled either to independent sources or to a common source of noise. Both Markovian and non-Markovian environments are considered. For the Markov regime, as the noise switching rate decreases, a monotonic decay of the initial quantum correlations is found and the loss of coherence increases monotonically with time up to the saturation value. For the non-Markov regime, evident oscillations of correlations and decoherence are observed due to the noise regime, but correlations, however, avoid sudden death phenomena. The oscillatory behavior is more and more prominent as the noise switching rate decreases in this regime, thus enhancing robustness of correlations. Similarly to the qubits case, independent environments coupling is more effective than a common environment coupling in preserving quantum correlations and coherence of the system for a Markovian noise; meanwhile, the opposite is found for the non-Markovian one. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Quantum correlations and decoherence dynamics for a qutrit–qutrit system under random telegraph noise

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-017-1645-4
Publisher site
See Article on Publisher Site

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