One-day workshop · CV-QKD
QOSST Day
A working day around QOSST, the open-source platform for continuous-variable quantum key distribution. Open to everyone (registration is free but mandatory).
Phase-space encoding — the shape QOSST measures
General information
Software, not slideware
QOSST Day is built around actually running the platform — from architecture to a live key exchange — alongside talks on where CV-QKD experiments are headed next.
QOSST (Quantum Open Software for Secure Transmissions) is a modular, hardware-agnostic open-source suite for continuous-variable quantum key distribution, initiated by the Quantum Information team at LIP6. It aims at providing all necessary steps for CV-QKD, including digital signal processing, control of the equipment, network operations, error correction and privacy amplification.
This workshop is open for anyone that wants to participate in the development of QOSST or use the software: researchers working on CV-QKD and/or adapting QOSST to new setups, and anyone evaluating open-source QKD tooling for their own lab.
No prior QOSST experience is required, but a working knowledge of continuous-variable quantum key distribution will help following the sessions.
Preliminary Program
The day, session by session
Scientific session in the morning. Use cases and discussion towards the future of QOSST in the afternoon.
Download the pdf program: program.
Welcome
Coffee
CV-QKD history
Frédéric Grosshans
Introduction to QOSST
Yoann Piétri
TBA
Alexis Rosio
TBA
Lucien Martial
TBA
TBA
Lunch
QOSST at Télécom Paris
Matteo Schiavon
QOSST at Sorbonne Université
Thomas Liege
QOSST at University of Padova
TBA
Coffee break
QOSST workflow
Participative session. Moderated by Yoann Piétri.
Future developments of QOSST
Participative session. Moderated by Yoann Piétri.
Role of open source in quantum information science
TBA
Closing remarks
Location
Where to find the workshop
LIP6, Sorbonne Université
4 Place Jussieu, 75005 Paris, France
- RoomCorridor 25-26 First floor — 25-26/105
- MetroJussieu (lines 7, 10)
- AccessBag checking at entrance — Enter from tower 26
Getting there
In metro: metro line 7 or 10 (metro station Jussieu).
In RER B: either change in Saint Michel station for the metro line 10, or walk from Saint Michel or Luxembourg to Jussieu (approx. 10 minutes).
From Orly airport: take the metro line 14 until stop Maison blanche. Then take metro line 7, direction La courneuve until stop Jussieu.
From Charles de Gaulle airport: take the RER B line to Châtelet and change to line 7 of the metro. Take direction Mairie d'Ivry or Villejuif until stop Jussieu.
Registration
Save your seat
Free to attend
Registration is free but mandatory.
- Deadline: 1 October 2026
- Confirmation will be sent by email on a manual basis
- Online component may be available (check box during registration)
Contact
Questions before the day
QOSST Day organization
General questions about the program, venue or registration.
Yoann.Pietri@lip6.fr