  We study transfer of single photon in an one-dimensional finite Glauber-Fock
cavity array whose coupling strengths satisfy a square root law. The evolved
state in the array can be mapped to an upper truncated coherent state if the
cavities are resonant. Appropriate choices of resonance frequencies provide
perfect transfer of a photon between any two cavities in the array. Perfect
transfer of the photon allows perfect quantum state transfer between the
cavities. Our findings may help in realizing quantum communication and
information processing in photonic lattices.
