Quantum Teleportation

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  • #38687
    SadGeezer
    Keymaster

    I’ve just read about some scientists who have teleported a laser beam to three metres away, and god bless our national papers, they then liken it to Star Trek teleportation…when it is anything but.
    It’s a shame they have to get people excited over nothing, well it’s not nothing, but it’s not teleportation…it’s replication or quantum cloning if you will.
    It just happens to be called Quantum Teleportation, but what happens is that the sending machine destroys the original and a copy at the atomic level is remade at the receiving end.
    The research for this is not for sending humans across vast distances, but to create quantum computers that will use atoms instead of wires to transmit information…and quantum computers are about 5-10 years away, the trouble with sending a human is that you need a device that will capture all of your atoms quantum states faster than the speed of light, and the requirements to store this information in a flash is beyond current means, also as you scan deeper into a photon for instance, that photon is essentially destroyed or it’s quantum state is disturbed, this is where the Heisenberg uncertainty principle kicks in.
    The good news is that you can’t say it’s impossible, as it does not violate the laws of physics, but utimately you end up with a replicator and not a teleporter, having said that for a teleporter to truly happen the object to be teleported would have to disappear, but it could well be the case that in Star Trek, destroying the original could be what happens.
    Even better news is that if successful, we could actually rid the world of starvation and poverty, the original (say lasagne)could be measured then sent to many devices instantaneously around the world where your copies would appear, imagine that, someone could send lasagne to thousands of destinations, and they will be attempting a solid matter quantum teleportation after the successful sending of a light particle.
    So in brief, teleporters…maybe not, but replicators…more than likely!!!
    Squishy

    #63647
    Headgehog
    Participant

    This is pretty exciting news. While it may seem like a small step, this opens lots of doors, and can help to inspire new ideas or interest people in improving on this design.

    quote:


    Originally posted by Squishy:
    Even better news is that if successful, we could actually rid the world of starvation and poverty, the original (say lasagne)could be measured then sent to many devices instantaneously around the world where your copies would appear


    Sounds great, but take two thigns into consideration:
    1) E=mc^2, right every knows that one. But not everyone knows what it means. It says that matter can be convertered into energy and vise-sersa. To create a lasagne out of nothing (but signals) will require a lot of energy! I mean more energy then we could ever harness (at least anytime soon)
    2) Cloning food also seems like a way to end world hunger. But people oppose it because it fake, its spliced, its not organic. Blah blah blah. So don’t expect everyone to accept it immediatly if it porves viable. Just like nuclear fusion. No one will accept it because it has the N word in it. And since it produces radiation, it therefore must be evil in their eyes. (Cancer is treated with radiation, and radion nuclides are essential in some watches and most smoke detectors, but people quickly forget these examples, and instead remember TMI-2, Chernobyl, and nuclear weapons) I’m sure that in the stone age, there was some ignoramous who said “don’t use fire, it can be dangerous”, but s/he probably died a painful death of food poisoning; whereas the fire users ate cooked germ free food, and lived on. (only to die a more painful death from a saber tooth tiger, but thats besides the point)

    #63648
    Anonymous
    Guest

    quote:


    Originally posted by Headgehog:
    This is pretty exciting news. While it may seem like a small step, this opens lots of doors, and can help to inspire new ideas or interest people in improving on this design.

    Sounds great, but take two thigns into consideration:
    1) E=mc^2, right every knows that one. But not everyone knows what it means. It says that matter can be convertered into energy and vise-sersa. To create a lasagne out of nothing (but signals) will require a lot of energy! I mean more energy then we could ever harness (at least anytime soon)

    Actually energy only palys a part in the measurement of the atoms at the sending end, what happens at the other end is like a big jigsaw puzzle, every photon has a twin that can be distanced yet still remain identical, in science they describe it as very ‘spooky’, if you tickle one, the other will laugh.
    So they have one photon at one end and it’s identical twin at the other, the first photon needs to be measured, but by doing so you alter it’s quantum state, but you can still measure enough information from that photon and send the remainder as unmeasured information and that information is then used to alter the state of the twin photon.
    So the Lasagne is made up of numerous atoms, all of which need their quantum states measured, the hardest part is not energy, as the measuring device would not expend such high energy, but the measurement of each atom requires this take place at the same time and be instantneous, i.e you can’t measure each atom one at a time (as each of them will change in quantum state) and the same goes for the other end, the reorganisation of the atoms would also have to instantaneous.
    So what is required is a super computer to measure this super dense information, ironically the very same thing they are trying to acheive in the first place…the quantum computer, and this (if fast as is hoped) will be able to calculate and measure atoms quantum states to acheive quantum teleportation.

    2) Cloning food also seems like a way to end world hunger. But people oppose it because it fake, its spliced, its not organic. Blah blah blah. So don’t expect everyone to accept it immediatly if it porves viable. Just like nuclear fusion. No one will accept it because it has the N word in it. And since it produces radiation, it therefore must be evil in their eyes. (Cancer is treated with radiation, and radion nuclides are essential in some watches and most smoke detectors, but people quickly forget these examples, and instead remember TMI-2, Chernobyl, and nuclear weapons) I’m sure that in the stone age, there was some ignoramous who said “don’t use fire, it can be dangerous”, but s/he probably died a painful death of food poisoning; whereas the fire users ate cooked germ free food, and lived on. (only to die a more painful death from a saber tooth tiger, but thats besides the point)


    The lasagne would not be fake, unlike cloning it would not require an embryo or similar, in a sense it is a copy, but because we are dealing with paired photons, the copy is also an original.
    Nothing is improved upon during replication, the atoms that create the copy are linked in that it is the original.
    It’s difficult to explain, but the atoms that are at the receiving end are the same as the sending end, they are twins, absolutely identical in every way.
    All you are doing is finding out what the quantum state of atoms with lasagne is, once measured the quantum teleporter disembodies the paired twin and sends it via a quantum computer to a receiving quantum computer, where it is rembodied using the measured quantum state of it’s twin, but like I said it’s still original.
    This would be a hard pill for some to swallow, many will still be convinced that the new lasagne is a fake, because it’s difficult to understand how matter can be transported this way, but then many wondered how it was possible for sound to travel via telephone, this believe it or not goes along pretty much the same ideal.
    Fact is, is that this is becoming increasingly closer to reality, and as far as world hunger goes, I don’t think the starving people of Ethiopia would give a damn how the lasagne got to them, only that it’s food and is safe to eat, we in the west may be more sceptical though, as we can afford to be.
    Let’s hope this technology does get used for the right reasons, and is not left for use amongst the priviliged and rich.
    Squishy

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