http://www.ll.mit.edu/publications/technotes/TechNote_NanowirePhotodetector.pdf
Superconducting Nanowire Photodetector Arrays.
"An SNPD array can take advantage of a spatially multiplexed approach that allows detection of photons at a higher rate than a single SNPD would support without requiring complex optical coupling techniques typical of other photoncounting arrays. When illuminated by a single photon, only one of the SNPDs loses its superconductive properties. The remaining SNPDs remain available to detect the next photon, while the first SNPD recovers its superconductive properties."
Then the IBM TrueNorth chip with over 4000 cores and 4.5 billion transistors is touted to be the closest thing to the human brain's processing ability http://www.extremetech.com/extreme/187612-ibm-cracks-open-a-new-era-of-computing-with-brain-like-chip-4096-cores-1-million-neurons-5-4-billion-transistors.