ICQCS 2026 is a five-day conference dedicated to quantum-safe communication, bringing together communities that are often split across separate venues: post-quantum cryptography (PQC), QKD theory and protocols, and experimental QKD and network integration. Hosted in central Paris, ICQCS aims to enable genuine technical cross-fertilization between cryptographers, experimentalists, engineers, systems/network researchers, and industry stakeholders.

The program combines keynote-tutorial talks, invited presentations, posters, and a dedicated industry session.

Co-organized by the DIM QuanTiP and the MSCA QSI project, ICQCS 2026 offers keynote-tutorials and invited talks—clear, technical, and cross-disciplinary—covering PQC, QKD (theory & experiment), beyond-QKD quantum cryptography, and quantum networks, with posters and an industry session.

When: From Monday, March 16, 2026 to Friday, March 20, 2026

Where: Campus des Cordeliers, 15 rue de l'Ecole-de-Médecine, Paris 6e

Outreach event:
Tuesday March 17, 7 p.m
Cité Internationale Universitaire de Paris - Collège d'Espagne
7 E Boulevard Jourdan, 75014 Paris 

Gala dinner:
Wednesday March 18, 7 p.m
Poinçon Restaurant
124 avenue du General Leclerc, 75014 Paris

Registration open: November 12, 2025 → March 1, 2026

Participation is free, and on-site catering is provided (coffee breaks, cocktails), but registration is mandatory.

All participants are welcome to present a poster.

SCAM ALERT: We have been notified that unaffiliated companies such as "GTravel Service" are contacting participants about alleged accommodation bookings for the conference. Please note that this is a scam, and you will not be contacted by any third party on our behalf.