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Q-Day Summit™

Quantum Risk · Post-Quantum Cryptography · QKD
Paris
June 9 2026
Attend the Q-Day Summit™
Quantum breakage is no longer theoretical

The Q-Day Summit™ By Qadastra™ ofthe June 9, 2026 is the first executive summit dedicated exclusively to the cryptographic transition and to securing critical infrastructures in the face of quantum disruption.

While the threat”Harvest Now, Decrypt Later“(HNDL) weighs on sensitive data, the Q-Day Summit™ brings together decision-makers and experts to transform systemic risk into strategic agility.

The 2 pillars of Q-Day Summit™

Post-Quantum Cryptography (PQC)

  • Migration strategies and cryptographic inventory.
  • Standardization (NIST) and integration into existing systems.
  • Management of obsolescence and hybridization of protocols.

Quantum Communication & QKD

  • Physical infrastructures and key distribution networks (Quantum Key Distribution).
  • The emergence of the Quantum Internet: sovereignty issues.
  • Securing critical data flows (finance, energy, defense, etc.).

Event format

01
Keynotes
Visions of global thought leaders.
02
Round tables
Comparison of industrial use cases.
03
Mini stands
Networking between keynotes and round tables.
04
Business Facilitation
Private spaces for solution providers and contractors

Our sponsors

Join the
‍Q-Day Summit™

We bring together an exclusive audience of 150 decision-makers (C-Level): CTOs and Innovation Directors of major groups, CISOs and Risk Managers in critical sectors (Banking, Energy, Defence), European public decision-makers and DeepTech investors.

L'organisation se réserve le droit de décliner toute demande ne s'inscrivant pas dans les secteurs ou fonctions cibles (C-Level, RSSI, institutionnels, etc...), et ce, afin de préserver l'interactivité et l'homogénéité de cette assemblée de 150 executives.
Participate in Q-Day Summit™

Speakers

Laurent
Leloup
Founder
Jay
Oberai
Co-founder and CEO
Sharoz
Khan
Partnerships & Growth
Mohamed
Bassiouny
Cybersecurity Lab Leader
Paul
Chammas
Managing Partner
Mohamed
Abdelkader
Regional lead - Digital Identity
Jonathan
Schmitt
Technical Pre-Sales Consultant
Daniel
Vert, PhD
Coordinateur Hub AEC
Lionel
Klein
Cybersecurity Leader
‍
Thibault
Verbiest
Avocat & Président IOUR
Jean-Jacques
Quisquater
Cryptographe & Académicien
‍

Program

Mardi 9 juin 2026 de 8h30 à 17h30
Auditorium - WORKSTATION building, 25 Quai du Président Paul Doumer - 92400 Courbevoie
The program below is temporary and is an example. The final program will be online from the beginning of April. Thanks for your understanding
08.30
08.55
Registration, welcome coffee, screening of the latest videos of NEXO 2045, partner of the future.
08.55
09.00
The welcome word
Introduction to the Q-Day Summit™ by Qadastra
09.00
09.30
Visibility as a foundation for resilience
Q&A from the audience
09.30
10.00
The human factor in technological transition - Q&A from the public
10.00
10.30
Quantum Proof Zero Trust - Public Q&A
10.30
11.00
Coffee and pastry break & networking (stands, private rooms)
11.00
11.30
Quantum resistance and blockchains - Public Q&A
11.30
12.00
Cryptographic agility in practice - Q&A from the public
12.00
13.30
Lunch break & networking (stands, private rooms)
13.30
14.30
Round table: Standardization and regulatory compliance
14.30
15.00
Securing hybrid data flows (Cloud & Edge) - Q&A from the public
15.00
16.00
Coffee and pastry break & networking (stands, private rooms)
16.00
16.30
QKD & Critical Infrastructures
Q&A from the audience
16.30
17.00
Roundtable: The convergence of AI and PQC - Intro Q-AI Summit™
17.00
17.15
The final word
Summary of the Q-Day Summit™
17.15
End of the Q-Day Summit™ - 1st edition

NEXO 2045

NEXO 2045 will be speaking at the opening of the Q-Day Summit™.

Coming from the Metroplex universe, NEXO offers a prospective projection on the convergence between artificial intelligence, digital sovereignty and quantum transition.

The decisions taken in 2026 are already structuring the gap between:


  • Those who secure their quantum sovereignty
  • Those who underestimate the speed of the changeover

NEXO does not entertain.


It exposes a future conditioned by our present choices.

Escape the Matrix

NEXO 2045

NEXO 2045 will be speaking at the opening of the Q-Day Summit™.

Coming from the Metroplex universe, NEXO offers a prospective projection on the convergence between artificial intelligence, digital sovereignty and quantum transition.

The decisions taken in 2026 are already structuring the gap between:


  • Those who secure their quantum sovereignty
  • Those who underestimate the speed of the changeover

NEXO does not entertain.


It exposes a future conditioned by our present choices.

Escape the Matrix

Associative partners

Location

WORKSTATION Auditorium
25 Quai du Président Paul Doumer
92400 Courbevoie
Location: Workstation La Défense

Contact

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