From: Adam 

http://www.theregister.co.uk/2007/01/25/single_photon_storage/

Seeing is believing ....

An entire image's worth of data has been encoded into a single photon,
without information being lost, for the first time.

The image "UR", for New York's University of Rochester, where the
work was carried out, was also decoded (pictured above) after being stored
briefly."

"The image was created simply by shining a single photon through a
minute stencil. At that scale, quantum mechanics dictates that a single
photon passes through all the holes in the stencil simultaneously, picking
up the shadow - or the information - from each one.

The photon then passed into a four inch "cell" of caesium gas at
100øC, where it was slowed. The new approach to slowing light used by the
researchers means that thousands of information-bearing photons could be
stored in a single cell without data being lost.

Alan Willner, professor of electrical engineering at the University of
Southern California and president of the IEEE Lasers and Optical Society
said: "The parallel amount of information John has sent all at once in
an image is enormous in comparison to what anyone else has done before. To
do that and be able to maintain the integrity of the signal - it's a
wonderful achievement.""

Now put that together with the 2split a photon & a change to 1 part of
the photon is reflected in another & you have a communications
medium.....

I did laugh when I saw it spelt "UR" coz that's 1/2 of an SMS
message e.g. UR L8 

Adam

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