This was a really interesting watch: A company, [Q.ANT](https://qant.com/) successfully installed one of their photonic NPUs in a datacenter in Germany -- "photonic NPU" meaning the processing uses photons/light to transmit data. Apparently, it does so by transmitting data via lasers in the chip and is an analogue solution which means there isn't the downside of excess heat and electrical resistance that GPUs come with. Using light to transmit data also results in faster speeds than requiring a bunch of transistors to transmit data in GPUs. I think it's way too early to say whether or not this will change the landscape of high performance computing, but it does seem like we're hitting an unsustainable threshold with GPUs, so I'm interested to see where it goes.