Non-Markovian effects on non-locality of a qubit-oscillator system

TL;DR

This paper investigates how non-Markovian dynamics influence the non-locality of a qubit-oscillator system, revealing complex effects including insensitivity and information back-flow.

Contribution

It provides a detailed analysis of non-Markovian effects on quantum non-locality in a qubit-oscillator system, highlighting diverse and non-intuitive impacts.

Findings

Non-Markovianity can cause insensitivity of Bell function.

Evidence of information kick-back in non-Markovian dynamics.

Different aspects of non-Markovianity affect non-locality in varied ways.

Abstract

Non-Markovian evolutions are responsible for a wide variety of physically interesting effects. Here, we study non-locality of the non-classical state of a system consisting of a qubit and an oscillator exposed to the effects of non-Markovian evolutions. We find that the different facets of non-Markovianity affect non-locality in different and non-obvious ways: ranging from pronounced insensitivity of the Bell function to quite a spectacular evidence of information kick-back.