Entanglement backflow under the composite effect of two non-Markovian reservoirs

The entanglement backflow of two qubits coupled to two independent reservoirs is investigated. It is found that under the collective effects of the two independent reservoirs, the entanglement backflow of the qubits does not always increase with the increase of the non-Markovianity of one of the reservoirs but demonstrates an intricate behavior. Interestingly, the action of one reservoir can affect the other reservoirʼs contribution to the entanglement backflow even when the two reservoirs are independent.

► We study entanglement backflow of two qubits coupled to two independent reservoirs.
► We find that the entanglement backflow demonstrates an intricate behavior.
► The action of one reservoir can affect the contribution of the other reservoir.