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

TL;DR

This paper investigates how unbalanced random telegraph noise affects quantum correlations, non-Markovianity, and teleportation fidelity in two-qubit systems, revealing that noise imbalance can mitigate decoherence.

Contribution

It provides a detailed analysis of unbalanced RTN effects, highlighting differences from balanced noise and its impact on quantum teleportation.

Findings

Unbalanced RTN influences quantum correlations differently than balanced RTN.

Noise imbalance can reduce decoherence effects.

Teleportation fidelity is preserved better under unbalanced RTN.

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.