  We propose a protocol for state transfer and entanglement generation between
two distant spin qubits (sender and receiver) that have different energies. The
two qubits are permanently coupled to a far off-resonant spin-chain, and the
qubit of the sender is driven by an external field, which provides the energy
required to bridge the energy gap between the sender and the receiver. State
transfer and entanglement generation are achieved via virtual single-photon and
multi-photon transitions to the eigenmodes of the channel.
