Encrypted network node with quantum key distribution equipment, part of SwissQuantum testbed
Here is what different boxes are doing at this node, in a presentation slide (PDF, 817 MiB):
This picture from Cracking commercial quantum cryptography gallery and Quantum hacking lab gallery is included in Picture Collection (ref. nr. a299-3) on Photo Pages.
Taken on January 27, 2010.
Fujichrome Sensia 100 film, Canon
How you can use this image. ©2010 Vadim Makarov