.....Teleportation.....
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Thread: .....Teleportation.....

  1. #1
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    Lightbulb .....Teleportation.....

    19:00 06 February 02
    Anil Ananthaswamy


    The dream of teleporting atoms and molecules - and maybe even larger objects
    - has become a real possibility for the first time. The advance is thanks to
    physicists who have suggested a method that in theory could be used to
    "entangle" absolutely any kind of particle.
    Quantum entanglement is the bizarre property that allows two particles to
    behave as one, no matter how far apart they are. If you measure the state of
    one particle, you instantly determine the state of the other. This could one
    day allow us to teleport objects by transferring their properties instantly
    from one place to another.
    Until now, physicists have only been able to entangle photons, electrons and
    atoms, using different methods in each case. For instance, atoms are
    entangled by forcing them to interact inside an optical trap, while photons
    are made to interact with a crystal.
    "These schemes are very specific," says Sougato Bose of the University of
    Oxford. But Bose and Dipankar Home, of the Bose Institute in Calcutta, have
    now demonstrated a single mechanism that could be used to entangle any
    particles, even atoms or large molecules.


    Beam splitter


    To see how it works, consider the angular momentum or "spin" of an electron.
    To entangle the spins of two electrons, you first need to make sure they're
    identical in all respects but their spin. Then you shoot the electrons
    simultaneously into a beam splitter.
    This device "splits" each electron into a quantum state called a
    superposition, which gives it an equal probability of travelling down either
    of two paths. Only when you try to detect the electron do you know which
    path it took. If you split two electrons simultaneously, both paths could
    have one electron each (which will happen half of the time) or either path
    could have both.
    Bose and Home show mathematically that whenever one electron is detected in
    each path, they will be entangled. While a similar effect has been
    demonstrated before for photons, the photons used were already entangled in
    another way, even before they reached the beam splitter.
    "One of the advances we have made is that these two particles could be from
    completely independent sources," says Bose.


    Massive particles


    The technique should work for any objects - atoms, molecules and who knows
    what else - as long as you can split the beam into a quantum superposition.
    Anton Zeilinger, a quantum physicist at the University of Vienna in Austria,
    has already shown that this quantum state is possible with buckyballs -
    football-shaped molecules of C60. Although entangling such large objects is
    beyond our technical abilities at the moment, this is the first technique
    that might one day make it possible.
    Any scheme that expands the range of particles that can be entangled is
    important, says Zeilinger. Entangling massive particles would mean they
    could then be used for quantum cryptography, computing and even
    teleportation.
    "It would be fascinating," he says. "The possibility that you can teleport
    not just quantum states of photons, but also of more massive particles, that
    in itself is an interesting goal."

    Journal reference: Physical Review Letters (vol 88, article 05401)

    ****************************************************************
    I find it staggering the way science is leaping forward all the time. So the research that is going on now into teleportation, may one day result in large object / human teleportation. Incredible. The view of Gerry Anderson in Star Trek might one day turn out to be true. Has anyone else noticed that the views of science fiction writers, no matter how unbelievable, might well become reality?

  2. #2
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    Wow.... Freaky stuff.... Heh no more lines at the airport

  3. #3
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    Wow...sounds very complicated!! Imagine all the possibilities if they manage to get it perfect? Maybe I should sell my car?

    Greg
    \"Do you know what people are most afraid of?
    What they don\'t understand.
    When we don\'t understand, we turn to our assumptions.\"
    -- William Forrester

  4. #4
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    Yep, the possibilities are almost infinite. Cars, trains and planes might well become obsolete over night. If say aid is needed in one country, then it could be there as soon as the grain / people got to a teleport site. Maybe even an afternoon lunch on the moon might be a possibility.... This science is just in its conception stage but look how far the airplane has come from the first Wright brother flight? And in such a short time too!




  5. #5
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    I know. I mean it's only a matter of time. That's all it really takes. There are always people researching and working on new possibilities, pushing science to the limits. With all this research and work being done, it's only a matter of time before we see something that will really take the world by storm.

    Greg
    \"Do you know what people are most afraid of?
    What they don\'t understand.
    When we don\'t understand, we turn to our assumptions.\"
    -- William Forrester

  6. #6
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    << Nods in agreement to the wise words of hot_ice.






    pr remember ppl you heard it here first! lol

  7. #7
    Flash M0nkey
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    Hmmmmm but what about the military aspect? heh so much for early warning systems for missles etc - you could simply beam a bomb into your enemies bathroom!

    Ah what a bright new world

  8. #8
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    valhallen: I think you're on to something...and I really dont like it =\
    To be God is to be Root, if someone is erking you just type: rm -d /home/heathen

  9. #9
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    Any advance to a technology - say airplanes, would sooner or later lead to advances in technologies that can combat a specific threat - like anti aircraft guns.

    I myslef would like to think more on the positive side of the benefits of this future technology. But I'm sure it would end up being used for bad aswell as good causes. Sadly is the way of the world




  10. #10
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    in all honesty though, military and semi-military organizations are one of the biggest reasons for the speed of technological advances -- computers, plastics, etc

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