Information back-flow in quantum non-Markovian dynamics and its connection to teleportation

TL;DR

This paper explores the relationship between quantum non-Markovian dynamics and quantum teleportation, revealing how information flow between system and environment influences teleportation and can lead to state revival.

Contribution

It establishes a novel connection between non-Markovianity and teleportation protocols in both discrete and continuous-variable quantum systems.

Findings

Information flow during teleportation is bidirectional.

Non-Markovian effects can cause state revival after information back-flow.

Quantum teleportation dynamics are linked to environmental memory effects.

Abstract

A quantum process is called non-Markovian when memory effects take place during its evolution. Quantum non-Markovianity is a phenomenon typically associated with the information back-flow from the environment to the principal system, however it has been shown that such an effect is not necessary. In this work, we establish a connection between quantum non-Markovianity and the protocol of quantum teleportation in both discrete and continuous-variable systems. We also show how information flows during a teleportation protocol between the principal system and the environment in a bidirectional way leading up to a state revival.