Those perturbed about this week’s news that government spies may be perusing all sorts of personal communications might be particularly enthusiastic about the work of Purdue researchers in developing a time cloak to hide data. Of course, it might not be altogether practical to turn on the phase modulator before sending every email message, but still, aren’t the possibilities comforting?
If a message isn’t read, does it exist? Bishop Berkeley would say no, and a temporal cloak that creates a gap in time during the transmission of a message might prove him right.
Researchers at Purdue University have created such a cloak: It can hide about 46 percent of the time required to transmit data over a fiber optic cable, making half the transmission invisible.
SOURCE: technewsworld.com
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