1 research outputs found
Environment mediated multipartite and multidimensional entanglement
Quantum entanglement is usually considered a fragile quantity and decoherence
through coupling to an external environment, such as a thermal reservoir, can
quickly destroy the entanglement resource. This doesn't have to be the case and
the environment can be engineered to assist in the formation of entanglement.
We investigate a system of qubits and higher dimensional spins interacting only
through their mutual coupling to a reservoir. We explore the entanglement of
multipartite and multidimensional system as mediated by the bath and show that
at low temperatures and intermediate coupling strengths multipartite
entanglement may form between qubits and between higher spins, i.e., qudits. We
characterise the multipartite entanglement using an entanglement witness based
upon the structure factor and demonstrate its validity versus the directly
calculated entanglement of formation, suggesting possible experiments for its
measure.Comment: 9 pages, 10 figure