Optical setup to test the sender and receiver for satellite-based quantum key distribution.

Entangled photon source used for quantum key distribution.

Peering into the Class-100 fab.

Inside the building that houses the Institute for Quantum Computing at the University of Waterloo. Note the 1m thick concrete floors to minimise vibration.

IQC researchers are poking into the electronics of a commercial quantum key distribution system (the black boxes on the optical bench) to discover implementation flaws that could be leveraged for eavesdropping.