Whole beams, not just particles, can be entangled. This, plus anomalous dispersion in 'fast-light' materials, allows signals be to 'advanced' over signals travelling in vacuum, at least in a limited sense.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/n...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/n...