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