Teleportation, sci-fi-y as it sounds, is actually not fictional or even new; two years ago, Chinese physicists broke the then-current record for quantum teleportation by teleporting photons over 10 miles. But a new effort from that same team demolishes that record, beaming the photons over 97 kilometers.
The physicists, working from the University of Science and Technology of China in Shanghai, have again taken advantage of quantum entanglement for the purposes of moving an object from one place to another without ever moving in the space between. According to Technology Review, "The idea is not that the physical object is teleported but the information that describes it. This can then be applied to a similar object in a new location which effectively takes on the new identity."
The task uses a 1.3-watt laser "and some fancy optics" to beam those photons and retrieve them at the final location. The trick seems to be maintaining the photons' information, since the beam widens over space, but eventually teleportation of this sort could be used to beam information incredibly quickly up to satellites.
this could possibly paste and copy people in the future over great distances, buy would the copy have the consciousness of the original? cheers
i think this should be used to deliver my amazon.com purchases instantly.
'teleportation of this sort could be used to beam information incredibly quickly up to satellites'
False, this is only a security device to send information very securely. Think of it like erasing a hard drive and mailing it then unerasing it at the other end. The hard drive still has to travel the distance at normal speeds.
Quantum teleportation has some draw backs. You must send the information one photon at a time making it very slow. Photons are a wave and the spot they end up on spreads out with distance out meaning you need a large collecting area at the far end. If you send it through fiber optic cables the photons state becomes damaged and looses the magical ability to be unerased.
What the Chinese have done is find a way to restrict where the photon can appear without damaging it.
Adaptation is correct.
I would also like to add that in quantum transportation for the purpose of transferring information, the "life" of the photon is very short. Once you alter the polarization of the entangled photons it cannot be altered again. You cannot simply entangle two photons, give one to your friend, and then alter it to send messages.
Popsci loves to spin it that way and get people excited but unfortunately it doesn't work that way.
are you sure about this? Say two photons are entangled, polarized in some plane and then separated by an arbitrary distance. It is your understanding that the polarized states cannot be changed again? I thought this was the "spooky action at a distance" that Einstein discussed.
We have to keep in mind that the photons don't always change state losing e. In the wild, photons are, yes, a wave, but they also tend to congregate, especially when cruising out of a quasar or nebula after being launched by a magnetar or something else from the prior neighborhood, still barely alive but burning down. So in the real universe, we have to account for all other photons at some level, because they act as a scattering field in nature. Someone could correct me here if my take on reality is warped and I wouldn't mind.
@ drchuck: It is cut and paste. The original is destroyed and the copy is an exact replica of the original in the destination.
We progress only at the rate of the slowest
So what is it over 97 kilometers or over 100 kilometers? I love how people round up and don't even both to take out the "over" and put "about".
who knows, in a few dozen years it might be useful for something. baby steps i suppose
The answer to your question is simply look into a mirror and asks the same question. Does the refection have a conscious? I would say no, since it is simply a photon reflection and not a live as you.
Science sees no further than what it can sense, i.e. facts.
Religion sees beyond the senses, i.e. faith.
Open your mind and see!
Robot, what is "consciousness"? Is it soul, or is it the mind that animate the body? If 'all' information of a person could be copied, would then the copied body function the same way as the original, with the similar brain and the same memory?
This is as awesome as when I commute about by teleporting my vehicle daily. Of course when I say teleport, it is not actually teleportation, just as the article states that the experiment's entanglement isn't teleportation either. Nevertheless, isn't fun we can use arbitrary terms for effects where they do not apply? Now I'm going to submit this comment using the "Invoke Magic" button. Happy Victory Over Mars Day everybody!
teleportation is dangerous for complex objects that have great mass. and will make all humans fat.
"religion is like a prison for the seekers of wisdom"
"Scotty", he beamed, "have you lost your mind?".