Abstract
Optical loss fundamentally limits the coherence, efficiency, and scalability of photonic systems. Each leap in photonic-integrated-circuit (PIC) performance has been driven by breakthroughs in low-loss materials. In this talk, I will present our recent progress toward fibre-like loss for photonic integration, realized through a Ge-doped silica platform that transfers optical-fibre materials into a CMOS-compatible process. We demonstrate microresonator Q-factors exceeding 500 million and waveguide losses below 0.1 dB/m. In the visible band, the platform achieves over 20× lower loss and 100× narrower-linewidth integrated lasers compared with state-of-the-art PICs. Such unprecedented performance paves the way for multi-wavelength control of atoms and ions on a chip, redefining the limits of classical photonics and opening new regimes for quantum technologies.
Anyone interested is welcome to attend.