Classicality from zero discord for continuous-variables bipartite systems

TL;DR

This paper constructs a classical model for continuous-variable bipartite systems that maintains zero quantum discord over time, highlighting features that distinguish classical from quantum information processing.

Contribution

It introduces a formal model with zero two-way discord over long durations, providing insights into classicality in continuous-variable quantum systems.

Findings

Model remains classical with zero discord over time

Highlights physical features of classical continuous-variable systems

Distinguishes classical from quantum information processing

Abstract

Quantum information resources quantified by non-zero discord are ubiquitous for the continuous-variables bipartite systems. Complementary to this, we formally construct a model characterized by zero two-way discord for arbitrarily long time interval. The model is classical in the sense it does not support quantum information processing. We point out some interesting physical features of the model.