I gave this talk about Quantum Computing and Quantum Cryptography some years ago. But after reading a lot of papers about quantum decoherence, I decided to left the field as the prospects were not very enticing.

Notwithstanding, this month has emerged with very interesting research (and it’s not the first sale of quantum computation device):

• The first full implementation of a perfect eavesdropper attacking a quantum cryptographic system: that is, breaking the physical implementation, not the theoretical part. Knowing the topopoly of the first user-oriented quantum computer network makes it much more fun.
• A paper with computer simulation results showing the error thresholds of some topological error codes with very good robustness, very good news for future stable quantum computer implementations.