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MIT Research Shows New Magnetic State That Could Aid Quantum Computing 49

Posted by samzenpus
from the a-new-spin-on-things dept.
alphadogg writes "Researchers at MIT and other institutions have demonstrated a new type of magnetism, only the third kind ever found, and it may find its way into future communications, computing and data storage technologies. Working with a tiny crystal of a rare mineral that took 10 months to make, the researchers for the first time have demonstrated a magnetic state called a QSL (quantum spin liquid), according to MIT physics professor Young Lee. He is the lead author of a paper on their findings, which is set to be published in the journal Nature this week (abstract). Theorists had said QSLs might exist, but one had never been demonstrated before. 'We think it's pretty important,' Lee said, adding that he would let his peers be the ultimate judges."
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MIT Research Shows New Magnetic State That Could Aid Quantum Computing

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  • by TexVex (669445) on Thursday December 20, 2012 @10:46PM (#42355597)
    Look, the Ansible is not possible with quantum entanglement. Also, the original science fiction concept of the Ansible did not involve quantum entanglement. A fictional Ansible is built from a fictional particle that exists simultaneously in two locations and never decays. For an Ansible to work, there must be a special frame of reference in Relativity, but General Relativity does not allow for treating any frame differently from any other frame.

    Entanglement is the splitting of a bit of quantum information across two interactions. Neither of the two interactions can possibly have any effect on the other; all that happens is that the entangled measurements from both interactions sum to zero. Every interaction between particles either creates entanglement or destroys it or performs some combination of the two.

    Consider that they must sum to zero in every frame of reference under General Relativity: no interaction can determine the results of another because then there would exist some frame of reference where the effect would precede the cause.

    That's the bonkers thing about entanglement: it implies determinism but also sidesteps it at the same time.
  • SUPERCONDUCTIVITY? (Score:2, Interesting)

    by Anonymous Coward on Friday December 21, 2012 @12:19AM (#42356151)

    Could this quantum spin liquid somehow help create room temperature superconductors? Because I once read that the formation of magnetic vortices is one of the things that helps to disrupt superconductive flow as temperature and current increase. But if this spin liquid were to keep all the magnetic spins randoma and unaligned, maybe this could suppress those vortices from forming?

Things are not as simple as they seems at first. - Edward Thorp

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