Interesting:
https://www.youtube.com/watch?v=T2yQ9xFshuc&list=PLyTFcYasPvUUwX0c07AelHBeyvHiuujsJ&index=1
As far as I understand: they use light to compute directly, no semiconductors required?
I think they operate at an other price range. Optalysys aims at supercomputers, i.e. weather-predictions, so Poet is not effected so far. But it´s fascinating.