Quantum state engineering with photonic qubits

We outline a scheme for the generation of a train of entangled single-photo n wavepackets using standard CQED-techniques. The generated photons are tra nsferred to the continuum outside the resonator through cavity loss in the form of wavepackets each of which may be regarded as a logical qubit. We sh ow that undesired decoherence effects can be efficiently reduced in the con sidered scheme.