The discussion revolves around the concept of photon polarization in the context of quantum teleportation. Participants explore whether a photon has a definite polarization prior to the teleportation process, considering the implications of entanglement and the nature of information transfer in quantum mechanics.
Participants do not reach a consensus on the nature of polarization prior to teleportation, and multiple competing views remain regarding the implications of the experiments and the interpretation of results.
There are unresolved questions about the definitions of terms used in the discussion, the assumptions underlying the experiments, and the limitations of the media representations of the scientific work.
Maui said:So amazing to see scientists realize ftl information transfer, while others battle to prove it's impossible :)
You are obviously citing this:ZapperZ said:You are forgetting that (i) there is nothing MOVING at FTL and (ii) the photons that were sent STILL had to move at c, not more.
Zz.
whereas my statement was based on the earlier:"But this group of engineers claim to have overcome these challenges, using a 1.3 watt laser to ensure the beam connecting the twin photons stays on target."
From previous experiements done by Zeilinger and co. i remember reading it was done employing glass fibers, not through the air as it appears from the article:"The real-world application of this research is the potential for instant data transfers.
The data doesn't travel through physical space, and therefore is much harder to be hacked or intercepted."
The way i read "The data doesn't travel through physical space, and therefore is much harder to be hacked or intercepted." seem to indicate the photons didn't travel through the laser beam(i am not certain anything travels at all during these types of experiments, it seems no). I'd love to see the original paper though."Our results show that even with high-loss ground to satellite uplink channels, quantum teleportation can be realized," says the paper.
Physics Monkey said:Maui,
The statement "The real-world application of this research is the potential for instant data transfers" is false. These scientists have not realized "ftl information transfer". This is simply another all too common case of press releases run amok.
StevieTNZ said:Is the to be teleported photon in a definite polarisation prior to teleportation? (I realize the actual photon is NOT teleported, just its state).
I ask because it seems they use a HWP etc, but does this create a definite polarisation? My guess is not because there is undefined input into the plate, but this is only a guess.