  We propose a multiple-range quantum communication channel to realize coherent
two-way quantum state transport with high fidelity. In our scheme, an
information carrier (a qubit) and its remote partner are both adiabatically
coupled to the same data bus, i.e., an N}-site tight-binding chain that has a
single defect at the center. At the weak interaction regime, our system is
effectively equivalent to a three level system of which a coherent
superposition of the two carrier states constitutes a dark state. The adiabatic
coupling allows a well controllable information exchange timing via the dark
state between the two carriers. Numerical results show that our scheme is
robust and efficient under practically inevitable perturbative defects of the
data bus as well as environmental dephasing noise.
