Quantum Wavelength Division Multiplexing (QWDM)

Important results from the project

The main goal of the project – to develop a counter-propagating photon source – was partially achieved. The source was not completed, but important technical milestones were achieved. A narrow spectrum could be demonstrated in preliminary tests, confirming the potential of the concept. The project also resulted in a new fiber-coupled waveguide product with broader application and commercial potential, strengthening Swedish quantum photonics.

Expected long term effects

The project is expected to contribute to the development of advanced quantum optical components and strengthen Swedish competitiveness in quantum photonics. The new fiber-coupled waveguide platform opens up more applications in, for example, quantum communication and laser systems. The results also lay the foundation for future product development and international collaborations.

Approach and implementation

The project was largely carried out according to plan, with a clear division that enabled the parties to work in parallel on different parts – for example, waveguide development and source design. This structure worked well and several interim goals were achieved. However, the final integration of the photon source was not completed in time, partly due to delayed deliveries. No major unexpected events occurred and the collaboration worked very well throughout the project.