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Laser Time Cloak Hides The Fact That An Event Ever Happened


Electrical engineers at Purdue University have found a way to make your data disappear completely--into holes in time. The technique, described in a paper published online in Nature yesterday, uses pulses of light to create "time holes" that allow communication across optic fibers to disappear completely.

The idea of a data cloak, a way to hide the transfer of data in "time pockets," has existed for a few years, but until now the effect didn't last long and wasn't consistent enough to be of any practical use. This is the first temporal cloak that can work quickly enough to hide data streams in telecommunications systems. It can work to hide up to 46 percent of the window of time it takes to transfer data (one of the first temporal cloaking techniques worked less than one percent of the time, according to a Purdue release).

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