[RightWhale]

They used a crystal to split photons into pairs of lower energy photons with different and entangled polarisations.

Is it possible that in the beginning there was one photon that split and resplit over and over until the present day and that all photons are entangled?

[Dick Vomer]

crystal blue persuasion??? It's a new sensation...

[snopercod]

ESP Explained!

[Senator Pardek]

On a related note, I believe it was Richard Feynman who theorized that the universe consists of only one particle, and that it zig-zagged around at a blinding rate all over, creating what seems to be matter consisting of many particles.

[InterceptPoint]

Is it possible that in the beginning there was one photon that split and resplit over and over until the present day and that all photons are entangled?

I will up the bet.

Since photons travel at the speed of light time is slowed to zzzzzzzzzzzzero in the reference frame of the photon. As a result, photons don't have to concern themselves with time and they can be everywhere at once.

So you only need ONE PHOTON to populate the universe.