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  1. #1
    License to Lillard tlongII's Avatar
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    http://www.time.com/time/health/arti...874760,00.html

    Physics and magic aren't often mistaken, but increasingly, physicists themselves seem to be trying to change that. Last year, a team at the University of California, Berkeley, announced that it had developed materials that could lead to an invisibility cloak. Last month, a group of researchers at Harvard University and the National Ins utes of Health reported that it had accomplished something not unlike levitation, causing a microscopic sphere of gold to rise above a glass surface. Now, according to a paper published in the Jan. 23 issue of Science, a team of scientists from the Joint Quantum Ins ute (JQI) at the University of Maryland and the University of Michigan has joined the fun. The current bit of legerdemain? Teleportation.

    Depending on your favorite sci-fi yarns, teleportation is either a very, very bad idea (see: The Fly) or a very, very cool one (see: Star Trek). For scientists, it's just very, very complex, so much so that at this point, teleportation is not a matter of moving matter but one of transporting information. Already, physicists have been able to exchange information between light particles — or photons — or between atoms, so long as they were right next to each other. The current experiment marks the first in which information has traveled a significant distance — 1 m, or a little more than 3 ft. — between two isolated atoms. It's also the first time the powers of a photon, which is good at traveling over long distances, and an atom, which is prized for its ability to retain information, have been jointly exploited. (See the top 10 scientific discoveries of 2008.)

    Using a pair of ions, or charged particles, group leader Christopher Monroe and his team place each in a vacuum and keep them in position with electric fields. An ultra-fast laser pulse triggers the atoms to emit photons simultaneously. If the photons interact in just the right way, their parent atoms enter a quantum state known as entanglement, in which atom B adopts the properties of atom A even though they're in separate chambers a meter apart. When A is measured, the information that had been previously encoded on it disappears in accordance with the quirky rules of the quantum world. But all is not lost: because B is entangled with A, B now contains the information that was once carried on A. That information, in a very real sense, has been teleported.

    O.K., so parents might not be inviting the JQI team to perform at their kids' birthday parties anytime soon, but what the quantum trick lacks in showmanship, it makes up for in practical applications for future computers. In 1965, Intel co-founder Gordon Moore predicted that the number of transistors that could be placed on a computer chip would double every two years — which is precisely what has happened. He was rewarded for his prescience with a sort of immortality: the famed "Moore's Law" is one of the venerable truths of the computer world. The rest of us were rewarded with ever faster and ever smaller computers. At some point soon, however, miniaturization will reach a point that's too tiny to be practical. It's then, many hope, that what's known as quantum computing — based on information-sharing particles — will take over.

    Quantum-computing technology is currently being used to encrypt data, but it holds a lot more potential than that, if only because of its massive information-storage capacity. One of the marvelous little wrinkles of the quantum world is a condition known as superposition, in which a particle can occupy two states at the same time. (Don't ask; it just can.) For this reason, a quantum bit, or qubit, can store two numbers at once. Each qubit added to a quantum computer doubles the size of the system, so if you want to know the capacity of a computer that contains 300 qubits, take the number 2 and multiply it by itself 300 times. "That's more than the number of particles in the universe," Monroe says. (See the best inventions of 2008.)

    The next step for the JQI team is to improve the photons' precision and the rate of communication between the particles. What we won't see soon — or ever, according to Monroe — is a contraption that can teleport humans from one point to another. Sorry, Captain Kirk, but beaming up is a pleasure strictly reserved for atoms. "There's way too many atoms," says Monroe. "At the other end of the transporter, you need to have some blob of atoms that represents Captain Kirk but has no information in it. I mean, what would that look like?"

  2. #2
    <><><><><><> ALVAREZ6's Avatar
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    of course it is, god does it all the time

  3. #3
    I don't have limits sonic21's Avatar
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    of course it is, god does it all the time
    @ your sig

  4. #4
    Live by what you Speak. DarkReign's Avatar
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    I was just reading a Scientific American yesterday about quantam superposition and the legacy of one Hugh Everett.

    Coincidences abound!

  5. #5
    Hedo Layup Drill ShoogarBear's Avatar
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    I was just reading a Scientific American yesterday about quantam superposition and the legacy of one Hugh Everett.

    Coincidences abound!
    No, that was the information in this post being transported back to your mind yesterday and prompting you to read that article.

  6. #6
    Blonde Yet Smart 2Blonde's Avatar
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    No, that was the information in this post being transported back to your mind yesterday and prompting you to read that article.
    +1

  7. #7
    Believe. Seth Brundle's Avatar
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    The key is to be pure. I was not pure. The teleporter insists on inner pure. I was not pure.

  8. #8
    Out with the old... Obstructed_View's Avatar
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    I was just reading a Scientific American yesterday about quantam superposition and the legacy of one Hugh Everett.

    Coincidences abound!
    In quantum mechanics, effects can precede causes. You were supposed to read that article.

  9. #9
    e^(i*pi) + 1 = 0 MannyIsGod's Avatar
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    Nice posts

  10. #10
    俺はまんこが大好きなんだよ baseline bum's Avatar
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    In quantum mechanics, effects can precede causes. You were supposed to read that article.
    No way. That completely invalidates the most airtight defense one can use in a court of law. I.e., the defendant was seen here and at this time, and the crime happened over here at some other time, outside his light cone; hence, my client could not have caused the crime, and is innocent. Our legal system would be in shambles without the light-cone defense.
    Last edited by baseline bum; 01-29-2009 at 09:48 PM.

  11. #11
    Live by what you Speak. DarkReign's Avatar
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    No, that was the information in this post being transported back to your mind yesterday and prompting you to read that article.
    In quantum mechanics, effects can precede causes. You were supposed to read that article.

  12. #12
    Iron Butted Warrior ORION's Avatar
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    One time I stuck my penis inside a chicks vag and it poked out of her mouth. Is this the same thing?

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