Non-Markovian dynamics of interacting qubit pair coupled to two independent bosonic baths

TL;DR

This paper investigates the non-Markovian dynamics of two interacting qubits each coupled to independent bosonic baths, providing an analytical solution and showing that non-Markovian effects can prolong or enhance quantum entanglement.

Contribution

It presents an analytical solution for the dynamics of two interacting qubits in non-Markovian environments, highlighting the impact on entanglement longevity and magnitude.

Findings

Non-Markovian effects extend entanglement lifetime.

Entanglement reaches higher values in non-Markovian regimes.

Analytical solution applicable to arbitrary spectral densities.

Abstract

The dynamics of two interacting spins coupled to separate bosonic baths is studied. An analytical solution in Born approximation for arbitrary spectral density functions of the bosonic environments is found. It is shown that in the non-Markovian cases concurrence "lives" longer or reaches greater values.