Moving beyond photonic topological insulators to minimize backscattering

Unlocking the potential of quantum photonics, recent research delves into photonic topological interfaces, revealing promising designs for waveguides that minimize backscattering losses, a crucial step toward engineering more efficient devices for telecommunications and sensing with implications for the realm of quantum photonics.

March 5, 2024

2:00 PM ET / 1:00 PM CT / 11:00 AM PT / 7:00 PM GMT

Duration: 1 hour

Already registered? Click here to log in.


Minimizing the loss of photons enables quantum photonics to scale. Within the realm of integrated photonics, surface roughness is a huge culprit.  

This webinar will look at photonic topological interfaces (waveguides) researchers designed to guide light through a chip to reduce this loss of photons/backscattering. Previous studies indicated it may be possible to prevent backscattering, but actual measurements of the losses and backscattering in topological waveguides had never been done. 

The potential to completely eliminate backscattering in slow light waveguides can’t be overstated: beyond enabling the engineering of more efficient and compact devices for telecommunications and sensing, it would open the door to a wide range of devices in quantum photonics.  

  • What were the key findings from the most recent research? 
  • How can the use of waveguides make a meaningful difference? 
  • How can research results impact potential applications 
  • What are the next steps? 


Søren Stobbe
Associate professor in the department of electrical and photonics engineering
DTU (Technical University of Denmark)

Sponsored by:

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!