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arXiv · 1105.5551

Creating quantum correlations through local non-unitary memoryless channels

Francesco Ciccarello·Vittorio Giovannetti
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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.

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Francesco Ciccarello, Vittorio Giovannetti. 2012-02-09. Creating quantum correlations through local non-unitary memoryless channels. https://doi.org/10.1103/physreva.85.010102

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