A new kind of quantum computer that harnesses photons has achieved a new breakthrough in quantum supremacy. In particular, this machine completed a computational task in 200 seconds while an ordinary supercomputer would require 2.5 billion years. The computer employes a technique called Gaussian boson sampling (a photon is a boson) and a complete description of the machine is given in an article published in Sciece (everyone can read it for free).
Recently I wrote an article on the The Limits of Computation , which was published in Philosophy Now . In this article I argue in favor of the idea that the limits of computation are currently unknown. In addition, I explore how this idea affects our understanding in a number of areas.