In this paper, we calculate a low order model of linear system large dimension, that matches set high moments the transfer function and achieves pole-zero placement constraints. The satisfying all constraints simultaneously is selected from family parametrized reduced models. parameters are computed solving an explicit algebraic system. Furthermore, construct Loewner matrices given data imposed...

In this work, we study transfer of coherence matrices along spin-1/2 chains various length. Unlike higher order matrices, zero-order matrix can be perfectly transferred if its elements are properly fixed. certain cases, to provide the perfect transfer, an extended receiver together with optimized unitary transformation has included into protocol.In asymptotic transferable for infinitely long ch...