CriptoCam srl

http://arxiv.org/abs/quant-ph/0701168

Despite the above link dates January 2007, it is still very useful to understand the state of the art of current QC. The paper can contain some technicalities, but is always well readable though.

http://arxiv.org/abs/0904.4073

The above link contains the “SECOQC Business White Paper on QC”. SECOQC is the acronym of “Secure Communication based on Quantum Cryptography” and is the first European serious effort to build up a QC-based network. However the above link deals mainly with commerical aspects of QC. So it is for non-specialists. Enjoy!