QEYnet

QEYnet is a Canadian company founded by aerospace engineers and quantum communication experts, building a global quantum key distribution (QKD) network using LEO microsatellites. The company was co-founded by Cordell Grant, who managed landmark Canadian small-satellite programs including BRITE-Constellation and CanX-4&5 formation flying at the University of Toronto Institute for Aerospace Studies, and Dr. Thomas Jennewein, Principal Investigator of the Canadian QEYSSat mission and faculty at the University of Waterloo Institute for Quantum Computing.

QEYnet's approach solves the fundamental scalability problem of ground-based fiber-optic QKD networks: losses make fiber QKD impossible beyond 100 km, requiring costly 'Trusted Nodes' that cannot be globally scaled. By placing Trusted Nodes on microsatellites in LEO — orbiting the Earth approximately 15 times per day — even a single satellite can provide global QKD connectivity, with the constellation growing naturally with demand.

Quantum key distribution uses the quantum nature of individual photons to generate encryption keys that are mathematically proven to be undetectable if intercepted, providing unconditional security that no computational advance — including quantum computers — can break, making it uniquely suited for data with long-term value in the post-quantum era.