Quantum Key Distribution (QKD) Integration in Existing Classical Networks

Dr. Elena Rossi,
Q-Cybersec Lab, Politecnico di Milano
The impending era of quantum computers poses a real threat to modern cryptographic standards. The answer to this challenge is Quantum Key Distribution (QKD). Dr. Elena Rossi will present the practical aspects of deploying QKD systems in commercial fiber-optic networks. The lecture will focus on the integration of photonic hardware with classical routers and optical switches, showcasing successful pilot deployments across Europe.
October 8 2026, 15:00
english

Rapid advancements in quantum technologies make the prospect of breaking widely used asymmetric algorithms (such as RSA) using Shor’s algorithm increasingly realistic. To protect the global data infrastructure from “Store Now, Decrypt Later” attacks, the urgent deployment of quantum cryptography solutions is essential.

Dr. Elena Rossi, a leading expert from the Q-Cybersec Lab at Politecnico di Milano, will guide us through the complexities of Quantum Key Distribution (QKD). The focal point of the lecture will not be physical theory itself, but rather the brutal engineering challenges. We will discuss the problems that arise when attempting to integrate sensitive single-photon emitters with current, “noisy” classical telecommunications infrastructure—routers, switches, and commercial fiber optics.

Seminar Agenda:

  • 15:00 – 15:20: Quantum threats to modern cryptography and the anatomy of QKD protocols.
  • 15:20 – 16:00: Engineering bottlenecks: Signal attenuation, decoherence, and integration with classical network hardware.
  • 16:00 – 16:30: Overview of European pilots: Deploying QKD networks in the banking and government sectors.
  • 16:30 – 17:00: Open discussion.

Target Audience: We invite cybersecurity specialists, telecommunications engineers, optical network architects, and decision-makers from the financial and public sectors responsible for long-term data protection strategies.