We show that the phenomenon of frozen discord, exhibited by specific classes of two-qubit states under local nondissipative decoherent evolutions, is a common feature of all known bona fide measures of general quantum correlations. All those measures, despite inducing typically inequivalent orderings on the set of nonclassically correlated states, return a constant value in the considered settings. Every communication protocol that relies on quantum correlations as a resource will run with a performance completely unaffected by noise in the specified dynamical conditions. We provide a geometric interpretation of this phenomenon.

Aaronson, B., Lo Franco, R., Adesso, G. (2013). Comparative investigation of the freezing phenomena for quantum correlations under nondissipative decoherence. PHYSICAL REVIEW A, 88(1), 012120 [10.1103/PhysRevA.88.012120].

Comparative investigation of the freezing phenomena for quantum correlations under nondissipative decoherence

LO FRANCO, Rosario;
2013-01-01

Abstract

We show that the phenomenon of frozen discord, exhibited by specific classes of two-qubit states under local nondissipative decoherent evolutions, is a common feature of all known bona fide measures of general quantum correlations. All those measures, despite inducing typically inequivalent orderings on the set of nonclassically correlated states, return a constant value in the considered settings. Every communication protocol that relies on quantum correlations as a resource will run with a performance completely unaffected by noise in the specified dynamical conditions. We provide a geometric interpretation of this phenomenon.
2013
Aaronson, B., Lo Franco, R., Adesso, G. (2013). Comparative investigation of the freezing phenomena for quantum correlations under nondissipative decoherence. PHYSICAL REVIEW A, 88(1), 012120 [10.1103/PhysRevA.88.012120].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/83744
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