Possibility of cloning quantum information from the past

Popular television shows such as "Doctor Who" have brought the idea of time travel into the vernacular of popular culture. But problem of time travel is even more complicated than one might think. Scientists have now shown that it would theoretically be possible for time travelers to copy quantum data from the past.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Y...