Sudden Change of Quantum Discord under Single Qubit Noise
arXiv:1212.6021 · doi:10.1142/S0219749913500482
Abstract
We show that the sudden change of quantum correlation can occur even when only one part of the composite entangled state is exposed to a noisy environment. Our results are illustrated through the action of different noisy environments individually on a single qubit of quantum system. Composite noise on the whole of the quantum system is thus not the necessarily condition for the occurrence of sudden transition for quantum correlation.
6 pages, 4 figures
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- The sudden change phenomenon of quantum discord
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