What They Say
Photonics World reported that two German Federal agencies have communicated via video over an optical link for the first time in a quantum-secure manner. The system did not use conventional methods for encryption, but was encoded by light quanta. Any attempt to monitor the conversation forces a new key to be created, blocking any interception.
In the setup of the first quantum-based videoconference between BMBF and BSI, multiple free-space and fiber quantum channels were used. This corresponds to a more complex scenario than a connection via a single quantum channel, the group said.
What We Think
Despite buying the book on ‘Quantum Physics for Babies’ that Pete recommended recently, I’m still struggling a bit with quantum physics, but I also struggle with cryptography, so the combination becomes a little daunting! With more and more video conferencing, very high levels of security are essential, and, as I understand it, quantum encryption is undefeatable. (BR)
The demo used a lot of equipment!
