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We provide an analytical investigation of the pairwise entanglement dynamicsfor a system, consisting an arbitrary number of qubits dissipating into acommon and non-Markovian environment for both weak and strong coupling regimes.In the latter case, a revival of pairwise entanglement due to the memory depthof the environment is observed. The leakage of photons into a continuum stateis assumed to be the source of dissipation. We show that for an initiallyWerner state, the environment washes out the pairwise entanglement, but aseries of non-selective measurements can protect the relevant entanglement. Onthe other hand, by limiting the number of qubits initially in the superpositionof single excitation, a stationary entanglement can be created between qubitsinitially in the excited and ground states. Finally, we determine thestationary distribution of the entanglement versus the total number of qubitsin the system.

Dynamics and protection of entanglement in n-qubit systems within Markovian and non-Markovian environments