In this work, a mechanism for improving the quantum state transfer efficiencyin a spin chain, which is in contact with a dissipative structured reservoir,is investigated. The efficiency of the method is based on the addition ofsimilar non-interacting auxiliary chains into the reservoir. In this regard, weobtain the exact solution for the master equation of the spin chain in thepresence of dissipation. It is found out that entering more auxiliary chainsinto the reservoir causes, in general, the better improvement of the fidelityof state transfer along the mentioned chain. Furthermore, it is reveal that theprotocol has better efficiency for a chain with longer length. Therefore, bythis method, quantum state transfer along a linear chain with an arbitrarynumber of qubits, can be well-protected against the dissipative noises.
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