Monday, March 5, 2012

Can Humans See 'Spooky' Quantum Images?

Date: 04 March 2012 Time: 09:37 AM ET
abstract image of light speed.
What do you think the world would look like if we could see such higher-order images, in which two tiny particles are entangled even when separated by large distances in space?
CREDIT: optimarc | Shutterstock
Quantum physics deals with the realm of the very small, and most of us never expect to see the weird world it describes. But could we? Recently, scientist Geraldo Barbosa of Northwestern University designed an experiment to answer that question.
The quantum effect Barbosa is hoping to see is called quantum entanglement, in which two or more particles can become "entangled" so that even after they are separated in space, when an action is performed on one particle, the other particle responds immediately.
A common experiment illustrating entanglement is to fire a laser at a special type of crystal. Occasionally a photon particle from the laser "splits" into two. The energy and momentum of the two new photons each add up to the value of the one originally fired.



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