Integrated Quantum Photonic Coupler for Secure Optical Networks
Faculty of Applied Sciences
About the Project
As cybersecurity threats continue to increase, there is a growing need for communication technologies that can provide stronger and more fundamental levels of security. This innovation proposes an integrated nonlinear photonic coupler designed to generate and control entangled light for future quantum optical communication networks. Unlike conventional bulk-optical arrangements, the proposed compact coupler is suitable for integration into photonic chips and can potentially be connected with other on-chip components, including waveguides, modulators, detectors and optical routing elements. The device uses nonlinear optical interactions and evanescent coupling to control the properties of the generated quantum state through adjustable system parameters. This provides flexibility in tailoring the degree of entanglement and optical output for different communication requirements. The generated entangled light could serve as a key resource for applications such as entanglement-based quantum key distribution, quantum repeaters and future quantum-network links. By combining compactness, controllability and compatibility with photonic integrated circuits, the proposed innovation provides a promising platform for the development of scalable and secure optical communication technologies.