Genuine quantum and classical correlations in multipartite systems

Details Genuine quantum and classical correlations in multipartite systems Genuine quantum and classical correlations in multipartite systems

2011-08-01

arxiv.org/abs/1108.0434v2

Physical Review Letters 107, 190501 (2011)

Physics

Quantum Physics

Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.107.190501

Generalizing the quantifiers used to classify correlations in bipartite systems, we define genuine total, quantum, and classical correlations in multipartite systems. The measure we give is based on the use of relative entropy to quantify the "distance" between two density matrices. Moreover, we show that, for pure states of three qubits, both quantum and classical bipartite correlations obey a ladder ordering law fixed by two-body mutual informations, or, equivalently, by one-qubit entropies.

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