Yes, we all wish for Quantum Computers... but in the meantime we need something here and now! Could Photonic Computers fit that role? Just about everyone has heard of fiber optics – using light for data transmission – but did you know that light can also be used for computing? There's a new commercial product expected for early next year (2022) . I contacted the CEO, Nicholas Harris, of a 4-y.o. startup, Lightmatter , interviewed in April 2021 here . Photonic computers, at least in their first commercial appearance, are essentially accelerator cards for Linear Algebra - and so of special interest for Machine Learning and some types of simulations. Their claims are remarkable: 10X faster than some of the best GPUs using 90% less energy can be used with existing software stacks, such as TensorFlow commercially available early next year (2022) a lot of future growth, as additional wavelengths of light get used in parallel My own interest is pr