Casper the Quantum Ghost | Science News

SUPPORT SCIENCE NEWS

Help us keep you informed.

Real Science. Real News.


News

Casper the Quantum Ghost

A strange kind of imaging relies on quantum mechanics

By
5:53pm, August 13, 2009

Casper just got upgraded from the “Friendly Ghost” to the “Quantum Ghost.” In a spooky new study, researchers found telltale signs of quantum weirdness lurking in an optical trick called ghost imaging. Discovered over a decade ago, ghost imaging allows researchers to create an image of something using light that never bounced off the actual object. The new work adds to the debate over whether ghost imaging is quantum in nature, or if normal, everyday physics can explain the phenomenon.

To look for evidence of quantum behavior, Scottish and Austrian researchers designed a system to create a ghost image of an appropriately ghoulish object (see image above). In the experiment, an ultraviole

This article is only available to Science News subscribers. Already a subscriber? Log in now. Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content