> They seem to have used a delay line, which is very slow; you have to wait for the bits you want to come around. Macroscopic delay lines sure, but microscopic

> They seem to have used a delay line, which is very slow; you have to wait for the bits you want to come around. Macroscopic delay lines sure, but microscopic ones presumably can be on the order of a wavelength, if that's all that's needed. Not much time needed to come around in that case.