HIgh PERformance optical filters for quantum and Integrated photONic technologies

Problem statement

Both quantum transducers and laser satellite systems face challenges in filtering weak optical signals from strong background pump or transmission signals. Current filters either lack efficiency, high suppression ratios or tunability, or are too bulky and prone to misalignment. This project will address that by developing an on-chip tunable filter with high efficiency, pump suppression ratio and bandwidth.

Technical approach

The project has two phases: first, studying filter building blocks to understand performance limitations and noise processes; second, building a proof-of-principle filter. Key questions include understanding what limits filter efficiency and suppression, how nonlinear and scattering processes affect performance, how to control resonances, and how to integrate filters with transducers effectively.

Expected results

The project will yield new knowledge on scattering processes, innovative filter designs potentially patentable, and design rules for photonic components. Beyond quantum transduction and satellite communications, applications include quantum memories, laser noise cleanup, optical coherence tomography, and satellite-based quantum communication. It strengthens the Netherlands’ position in integrated photonics, laser satellite communications and quantum technology, and supports European initiatives.