InterestingElectronics work by the electrical charge of the electron, spintronics use the spin instead. Its much faster and more efficient, but requires extreme precision engineering that hasn't been well developed yet. Plasmonics are a type of pseudo-optics, a kind of optical-electronic hybrid waveform, that have much shorter wavelengths then regular optics and are being developed for optical computing on chips because of their small size. Both optics and spintronics can at least theoretically be used for classical computing at close to the speed of light or even quantum computing.
So 128 atoms could represent 3.85620482 x 10^215 atoms? How much mass would 3.85620482x10^215 atoms of carbon come out to?In a classical computer its impossible, but not for a quantum computer where collectively the entangled particles can represent the factorial of their number. In the case of quantum entanglement there is strength in numbers and the total is greater then the sum of its parts.
Or creating something like a simulated universe a'la The Matrix...Like I've said in previous posts, it can be used to do all sorts of calculations that can't be done on a conventional computer. They could be useful for anything from quantum research to mathematics to medicine to designing the next compact car.