BBC Focus Magazine

[Shadowwolf]

Now I wonder what use this might have?

Think Harry Potter movie magic: Cornell researchers have demonstrated a "temporal cloak" -- albeit on a very small scale -- in the transport of information by a beam of light.

The trick is to create a gap in the beam of light, have the hidden event occur as the gap goes by and then stitch the beam back together. Alexander Gaeta, Cornell professor of applied and engineering physics, and colleagues report their work entitled "Demonstration of temporal cloaking," in the journal Nature (Jan. 5, 2012.)

http://www.sciencedaily.com/releases/2012/01/120106111312.htm