Creating quantum correlations through local non-unitary memoryless channels
arXiv:1105.5551 · doi:10.1103/PhysRevA.85.010102
Abstract
We show that two qubits, initially in a fully classical state, can develop significant quantum correlations as measured by the quantum discord (QD) under the action of a local memoryless noise (specifically we consider the case of a Markovian amplitude-damping channel). This is analytically proven after deriving in a compact form the QD for the class of separable states involved in such a process. We provide a picture in the Bloch sphere that unambiguously highlights the physical mechanism behind the effect regardless of the specific measure of QCs adopted.
5 pages, 4 figures
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