  Quantum spin chains may be used to transfer quantum states between elements
of a quantum information processing device. A scheme discovered recently
\cite{BFR+12} was shown to have favorable transfer properties for ingle-qubit
states even in the presence of built-in static disorder caused by manufacturing
errors. We extend that scheme in a way suggested already in \cite{BFR+12} and
study the transfer of the four Bell states which form a maximally entangled
basis in the two-qubit Hilbert space. We show that perfect transfer of all four
Bell states separately and of arbitrary linear combinations may be achieved for
chains with hundreds of spins. For simplicity we restrict ourselves to systems
without disorder.
