Another online monthly #IYQ2025 & #ThaiYQ2025 keynote talk will be given by Dr. Eleni Diamanti, Paris Centre for Quantum Technologies (PCQT) coordinator. A story of the Paris quantum technology ecosystem, focusing especially on quantum communication (quantum cryptography), will be presented on October 16, 2025. The historic evolution from Planck’s theory to 1925, through the modern quantum model, and to recent milestones will be traced. From the perspective of the PCQT Director, quantum communication, which involves hybridizing QKD with post-quantum cryptography and deploying prototypes like CV-QKD, will be highlighted alongside other visions of R&D management in this talk.