Tuesday, January 23, 2007

On Jan 23, 2007, at 8:27 PM, Fidelio wrote:
Researchers announced last week that they had slowed down faint pulses of laser light and retrieved an image from that light after speeding it back up. In principle such "slow-light" technology might be used to build a kind of traffic stop for light signals, called an optical buffer, that would be cheaper, more powerful and faster than converting light beams into electrical signals. That is why the Defense Advanced Research Projects Agency (DARPA), an arm of the Department of Defense, asked a group at the University of Rochester to explore the technology, says group leader, quantum optics researcher John Howell.

So naturally Howell was bemused that some media outlets focused in on one aspect of the report: that an entire image was somehow produced from a single photon, the smallest unit of light. "A lot of people are getting excited about the single photon," he says.


Yes, of course. What I write below is consistent with the above of course - I mention the need for entangled laser pulses to get enough amplification statistics to see something macroscopically. However, the point is that it's a bit like a hologram in that the entire message, the stencil pattern, is encoded as a whole, in each individual photon pair. Of course as you cut down on the number of photons to lower and lower total energies it gets harder and harder to see the pattern indeed to see anything. So of course we need a lot of photons, but the point is that each entangled photon pair is carrying so to speak a complete copy of the message in the shape of its mode function, i.e. the set {A(k)} from the delayed choice stencil.

I have combined two different experiments here, suggesting that the above experiment be incorporated in Cramer's retrocausal experiment.

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