Regular Article

Qubit systems subject to unbalanced random telegraph noise: quantum correlations, non-Markovianity and teleportation^★

Quantum Technology Lab, Dipartimento di Fisica Aldo Pontremoli, Università degli Studi di Milano, 20133 Milano, Italy

^a e-mail: claudia.benedetti@unimi.it

Received: 30 August 2018
Received in final form: 11 October 2018
Published online: 4 December 2018

Abstract

We address the dynamics of quantum correlations in a two-qubit system subject to unbalanced random telegraph noise (RTN) and discuss in details the similarities and the differences with the balanced case. We also evaluate quantum non-Markovianity of the dynamical map. Finally, we discuss the effects of unbalanced RTN on teleportation, showing that noise imbalance mitigates decoherence and preserves teleportation fidelity.