A team of researchers affiliated with several institutions in China created a photonic computer that was able to solve the subset sum problem. In their paper published in the journal Science Advances, the group describes their computer and how well it performed.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/5e381ca9220f4.jpg)
Source:
https://phys.org/news/2020-02-scalable-photonic-subset-sum-problem.html