Quantum Bridge Technologies Inc.

Canadian quantum-safe networking startup; University of Toronto spinout. CEO Mattia Montagna; CTO Hoi-Kwong Lo (long-tenure UofT QKD researcher and co-inventor of the decoy-state QKD protocol). Develops a proprietary Distributed Symmetric Key Establishment (DSKE) protocol using symmetric cryptography, secret sharing, and pre-shared entropy to provide quantum-resistant key distribution and management without public-key infrastructure, designed as a long-haul relay layer that extends QKD networks beyond the metropolitan distance limit without requiring quantum repeaters or satellite linkages. Reference deployments include Toshiba Europe + QBT transatlantic Cambridge-UK to Toronto-CA QKD-DSKE demonstration unveiled at OFC 2026 (publicly disclosed 2026-05-20), Juniper Networks early partnership, Government of Canada quantum-safe communications testing, and a 2026 Italtel international PQC partnership. Closed $8M USD Series A 2026-05-20 led by Primo Capital SGR (Italy) with participation from Wayra (Telefónica corporate venture), Hewlett Packard Enterprise (HPE), Cadenza VC, and Bacchus Venture Capital, bringing total financing to $16M USD. Created on 2026-05-21 event-driven trigger from the 2026-05-20 Toshiba-QBT transatlantic QKD-DSKE demonstration event. Networking-stack-software vendor; primary_modality therefore not_applicable.