State mapping and discontinuous entanglement transfer in a multipartite open system

TL;DR

This paper investigates how quantum information and entanglement can be transferred from a tripartite bosonic system to qubits in an open system, highlighting phenomena like sudden death and birth of entanglement.

Contribution

It demonstrates optimal state mapping and entanglement transfer in cavity QED systems, including effects of dissipation and noise on entanglement dynamics.

Findings

Successful transfer of entanglement to qubits in cavity QED

Observation of sudden death and birth of entanglement

Discontinuous exchange of entanglement among subsystems

Abstract

We describe the transfer of quantum information and correlations from an entangled tripartite bosonic system to three separate qubits through their local environments also in the presence of various dissipative effects. Optimal state mapping and entanglement transfer are shown in the framework of optical cavity quantum electrodynamics involving qubit-like radiation states and two-level atoms via the mediation of cavity modes. For an input GHZ state mixed with white noise we show the occurrence of sudden death and birth of entanglement that is discontinuously exchanged among the tripartite subsystems.