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math-ph2012★ 38 cited
Diagonalization of quasi-uniform tridiagonal matrices
Leonardo Banchi, Ruggero Vaia
The task of analytically diagonalizing a tridiagonal matrix can be considerably simplified when a part of the matrix is uniform. Such quasi-uniform matrices occur in several physic…
quant-ph2012★ 99 cited
99%-fidelity ballistic quantum-state transfer through long uniform channels
T. J. G. Apollaro, L. Banchi, A. Cuccoli +2
Quantum-state transfer with fidelity higher than 0.99 can be achieved in the ballistic regime of an arbitrarily long one-dimensional chain with uniform nearest-neighbor interaction…