Quantum Phase Wave teleportation of Chinese Knot

This is one of the implications of the well known but highly non-intuitive principle that looking at something changes it in the quantum realm.

Read more at: https://phys.org/news/2017-05-counterfa ... m.html#jCp

https://www.sciencealert.com/scientists ... first-time

It works based on the fact that, in the quantum world, all light particles can be fully described by wave functions, rather than as particles. So by embedding messages in light the researchers were able to transmit this message without ever directly sending a particle.

The team explains that the basic idea for this set up came from holography technology.

"In the 1940s, a new imaging technique - holography - was developed to record not only light intensity but also the phase of light," the researchers write in the journal Proceedings of the National Academy of Sciences.

"One may then pose the question: Can the phase of light itself be used for imaging? The answer is yes."

The basic idea is this - someone wants to send an image to Alice using only light (which acts as a wave, not a particle, in the quantum realm).

Alice transfers a single photon to the nested interferometer, where it can be detected by three single-photon detectors: D0, D1, and Df.

If D0 or D1 'click', Alice can conclude a logic result of one or zero. If Df clicks, the result is considered inconclusive.

As Christopher Packham explains for Phys.org:

"After the communication of all bits, the researchers were able to reassemble the image - a monochrome bitmap of a Chinese knot. Black pixels were defined as logic 0, while white pixels were defined as logic 1 ...

In the experiment, the phase of light itself became the carrier of information, and the intensity of the light was irrelevant to the experiment."

Tim Maudlin's Telepathic Methods paper on Einstein and John Bell - pdf link

fascinating stuff.