[World Scientific Publishing Co. Pte. Ltd. Condensation and Coherence in Condensed Matter - Nobel Jubilee Symposium - Göteborg, Sweden (2001.12.04-2001.12.07)] Condensation and Coherence in Condensed Matter - Proceedings of the Nobel Jubilee Symposium - Quantum Information with Atoms and Photons in a Cavity: Entanglement, Complementarity and Decoherence Studies