Researchers at ETH have demonstrated a new technique for carrying out sensitive quantum operations on atoms. In this technique, the control laser light is delivered directly inside a chip. This should make it possible to build large-scale quantum computers based on trapped atoms.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/opticalwirin.jpg)
Source:
https://phys.org/news/2020-10-optical-wiring-large-quantum.html