Centre Tecnologic de Telecomunicacions de Catalunya

Photonic Hardware and Network Architectures for the Quantum Internet: From Entanglement Generation to Global Connectivity

ABSTRACT The rapid growth of global data traffic and the increasing demand for secure and scalable communication are driving the need for networking paradigms beyond the classical internet. The quantum internet has emerged as a promising solution, leveraging the principles of qua...

The State of the Art in Satellite Quantum Key Distribution: Protocols, Technologies, and Physical Limits

ABSTRACT This review presents the state of the art in quantum key distribution (QKD) for satellite‐to‐ground free‐space optical links. It first surveys continuous‐variable, discrete‐variable, entanglement‐based, measurement‐device‐independent, and twin‐field protocols, and discus...