Quantum Correlation Dynamics of Three Qubits in Non-Markovian Environments

TL;DR

This paper studies how quantum correlations in a three-qubit system evolve over time when each qubit interacts with a non-Markovian environment, revealing revival phenomena and dependencies on initial states and environmental memory.

Contribution

It introduces a detailed analysis of three-qubit quantum correlation dynamics in non-Markovian environments using geometric quantum discord, highlighting revival effects and environmental influences.

Findings

Quantum correlations revive after disappearance with sufficient non-Markovianity.

Quantum correlation dynamics depend on initial state purity and correlation.

Comparison shows differences between quantum discord and entanglement behaviors.

Abstract

We investigate the quantum correlation dynamics of three independent qubits each locally interacting with a zero temperature non-Markovian reservoir by using the Geometric measure of quantum discord (GQD). The dependence of quantum correlation dynamics on amount of non-Markovian, the degree of initial quantum correlation and purity of the initial states are studied in detail. It is found that the quantum correlation of such three qubits system revives after instantaneous disappearance period when a proper amount of non-Markovian is present. A comparison to the pairwise quantum discord and entanglement dynamics in three qubits system is also made.