  Optimal state transport across spin chains, which are proposed as quantum
wires for information transfer in solid state quantum architectures, is an
important topic for quantum technologies. In this work, we study {the remote
restoring of a quantum state transferred along a spin chain.} The structural
state-restoring technique provides proportionality between the appropriate
elements of the density matrices of the initial sender state and receiver state
at some time instant. We develop a {remote} state-restoring protocol which uses
an inhomogeneous magnetic field with step-wise time-dependent Larmor
frequencies as the state-control tool. For simulating the multiparametric
Hamiltonian we use two approximating models. First model is based on the
Trotter-Suzuki method, while the second model is based on using short pulses of
high intensity. In both cases we estimate the accuracy of the approximation and
find the optimal restoring parameters (Larmor frequencies) of the protocol
which maximize the coefficients in the proportionality for spin chains of
various lengths.
