This PhD project focuses on the development of monolithically integrated Single-Photon Avalanche Diodes (SPADs) with silicon photonic waveguide platforms, enabling high-efficiency, low-noise single-photon detection for quantum technologies. SPADs are essential for applications in quantum communication, quantum computing, and quantum-enhanced sensing.

Aligned with the UK’s National Quantum Technology Program and the IQN and QEPNT hubs, this research supports the development of scalable, secure, and high-performance quantum networks.

Key Research Objectives:

• Design and fabricate waveguide-integrated SPADs using silicon-compatible materials for Quantum Key Distribution (QKD).
• Develop low-loss optical couplers to efficiently interface SPADs with optical fibres and free-space systems.
• Innovate optical-electrical decoupling strategies to optimise SPAD performance in photonic integrated circuits (PICs).

Research Training Includes:

• Device Modelling: Learn to simulate and optimise SPAD-PIC integration using advanced tools to reduce noise and maximise detection efficiency.
• Advanced Fabrication: Hands-on training in microfabrication techniques at the James Watt Nanofabrication Centre.
• Experimental Characterisation: Access to £2M+ of electro-optic lab equipment for testing SPAD and PIC performance.

Why Join This Project?

• Collaborate with leading industrial partners in the UK quantum ecosystem.
• Gain access to world-class facilities and training in simulation, fabrication, and characterisation.
• Contribute to next-generation quantum technologies with applications in secure communications, biomedical imaging, quantum LIDAR, and more.
• Publish in top journals and present at international conferences