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 quantum correlations adopted.
Ciccarello, F., & Giovannetti, V. (2012). Creating quantum correlations through local non-unitary memoryless channels. PHYSICAL REVIEW A, 85, 010102-1-010102-5.
Data di pubblicazione: | 2012 |
Titolo: | Creating quantum correlations through local non-unitary memoryless channels |
Autori: | |
Citazione: | Ciccarello, F., & Giovannetti, V. (2012). Creating quantum correlations through local non-unitary memoryless channels. PHYSICAL REVIEW A, 85, 010102-1-010102-5. |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevA.85.010102 |
Appare nelle tipologie: | 1.01 Articolo in rivista |
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