Guess what? A kind of “teleportation,” described as ”long-distance ‘disembodied‘ transfer” is now claimed to have been achieved. The wonders of modern science keep getting weirder by the day. I can already see airline executives shaking in their boots, not to mention the Hyperloop and “Uber”outfits—already so yesteryear …
Digging a bit deeper into the novel claims by the authors (Raju Valivarthi, et al.) of that paper in Nature Photonics, I’m already perplexed by the abstract that states:
Quantum teleportation faithfully transfers a quantum state between distant nodes in a network, which enables revolutionary information-processing applications. This has motivated a tremendous amount of research activity [references omitted]. However, in the past not a single quantum-teleportation experiment has been realized with independent quantum sources, entanglement distribution prior to the Bell-state measurement (BSM) and feedforward operation simultaneously, even in the laboratory environment.
This network is robust against noise in the real world with active stabilization strategies, which allows us to realize quantum teleportation with all the ingredients simultaneously.
Obviously, those are what must be the secret to the discovery, the right ingredients of the photons together with their “dis-entanglement.” Also, accurate timing seems to be highly critical: a few 0.000000000001th of a second can make the system fail. To put that into perspective: a beam of light will travel 0.3 mm (0.01 in) in that length of time.
The authors envision their finding to be of significance for a futuristic and secure internet system. Needless to say, I’m a bit doubtful. The thermal expansion of 1 km of glass fiber alone is already in the order of 10 mm (0.3 in) per degree C, far greater than that required for the system to work.
The real crux though is what has been “teleported.”
Pictures vs. Matter
What the paper shows is that photons could be transmitted along a fiber-optic (FO) cable network. Whoopie-Doo. Isn’t that what FO cables are supposed to do in the first place? Already a dozen or more years ago, while traveling through the countryside of Arizona, I saw posts along miles of sand road to advise of the buried FO cable along the road side. Sure enough, enterprising artisans near the mesas were well connected to downtown Big Apple customers via that “quantum teleportation” system of pictures of their creations. The actual creations (physical matter) still had to be shipped via the available courier system to the buyer.
No “teleportation” invention will ever change that requirement! And as to the photons being “dis-entangled” or not, I’ll need to study that in more depth, preferably over a glass of my favored “dis-entangled berry juice” still ripening on entangled vines.
In the meantime, please do not hesitate to call upon Scotty to do his work—and Safe Travels!