Sunday, May 24, 2009
nociva:

Scientists funded by the Air Force have used quantum entanglement — in which pairs of particles continue to interact even after they are spatially separated — to snap this picture of a tin solider without aiming a camera directly at the object.  The technique, called “ghost imaging,” has potential military or space applications, such as using aerial drones to survey of battlefields obscured by clouds, or the smoke that follows airstrikes.
“…[T]he image is not formed from light that hits the object and bounces back. The camera collects photons from the light sources that did not hit the object, but are paired through a quantum effect with others that did. An image of the toy begins to appear after approximately a thousand pairs of photons are recorded.”
via futurismic.com

This is difficult to comprehend (i.e. I can’t figure it out), but fascinating in implication.
The general idea seems to be that by imaging a light source and an object that is obscured behind fog or smoke, you can combine the information gathered to produce these shadowy and ghostly images.  It seems to me like the kind of an advance that once developed over the next couple of decades will make all kinds of amazing imaging possible.  Amazing.  Cool image they decided to test the technique with too.  The military is the ultimate ghostmaker.

nociva:

Scientists funded by the Air Force have used quantum entanglement — in which pairs of particles continue to interact even after they are spatially separated — to snap this picture of a tin solider without aiming a camera directly at the object.  The technique, called “ghost imaging,” has potential military or space applications, such as using aerial drones to survey of battlefields obscured by clouds, or the smoke that follows airstrikes.

“…[T]he image is not formed from light that hits the object and bounces back. The camera collects photons from the light sources that did not hit the object, but are paired through a quantum effect with others that did. An image of the toy begins to appear after approximately a thousand pairs of photons are recorded.”

via futurismic.com

This is difficult to comprehend (i.e. I can’t figure it out), but fascinating in implication.

The general idea seems to be that by imaging a light source and an object that is obscured behind fog or smoke, you can combine the information gathered to produce these shadowy and ghostly images.  It seems to me like the kind of an advance that once developed over the next couple of decades will make all kinds of amazing imaging possible.  Amazing.  Cool image they decided to test the technique with too.  The military is the ultimate ghostmaker.