MIT Research Shows New Magnetic State That Could Aid Quantum Computing 49
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."
Magnets..... (Score:1)
How do they work?
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How do they work?
The magnets attract, the magnets repel - never a miscommunication. You can't explain that.
SUPERCONDUCTIVITY? (Score:2, Interesting)
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?
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Naaah... It's an East pole with a polar opposite West pole.
... could aid... (Score:5, Funny)
... but we're still very early into this research," Lee said. "It's many, many years away [xkcd.com] from becoming something that's in a technology that a consumer would use."
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TFA never made claims that consumer products using this material were anywhere close at all. It's about the science at this point, not applications.
fancy lies (Score:4, Informative)
If I remember correctly, type one is all of em pointing the same way. That makes a field that sucks in other oppositely aligned materials.
Type two has approximately 50% facing one way and 50% the other in a perfectly intermingled way so it has a magnetic field of absolutely nothing in relation to other objects around it.
This third time is all of the atoms constantly changing magnetic direction and never settle into an order ever. They have a tendency to settle into an order so yeah, not easy to make, lol. Although the atoms themselves aren't moving, cuz it's a solid crystal, so this sort of acts like a perpetual motion device for magnetic fields only, not matter. Kinda neat. But it's still + and - attracting so sorry folks, no new force of physics.
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Have all those perpetual motion motor genorator people have the holy grail now?
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From the parent:
What do you think?
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Quasi-periodic tiling of magnetic spin axii?
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Quasi-periodic tiling of magnetic spin axii?
"Axii"? [wikia.com]
Perhaps you meant "axes" [google.com] (ahk-sees). See also: Irregular plurals from Latin and Greek. [wikipedia.org]
Sorry, don't mean to be pedantic, but made-up plurals are a pet peeve.
</rant>
...and wrong at that (Score:2)
What they're talking about is a different expression of magnetism, typically because the atoms inside are lined up differently.
Re:...and wrong at that (Score:4, Informative)
Let's try to sum up
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Of course you are missing the obvious... They seem to have demonstrated a state of magnetism where is might be possible to demostrate yet another macro-quantum effect.
As I understand it, one way to think of a Quantum Spin Liquid (or Glass), is that you have a bunch of magnetic domains embedded in a crystaline structure such that there is no stable anti-ferromagnetic pairing (there's no particular energetic reason for a specific two to pair to cancel each other out vs them forming pairs with other neighbors
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It kind of is. The magnetic field behaves like a liquid while the atomic structure is in a solid crystal.
So your "Type one" is the magnetic field is aligned with the atomic structure.
Your "Type two" is the magnetic field is aligned (cancelled out) with the atomic structure.
In this new type, the field is in a liquid state while the structure is solid.
Explain how that is not a different state. (by the way, there is no claim it is a new 'type of magnetism', it's about the state of it) It's also already been th
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sorry charlie, magnetic fields have no sources or sinks. they are always loops. there is no + and - in a magnetic field. there is a direction vector
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First, most famously, there's ferromagnetism, named thusly because iron famously exhibits it. So does steel and I think nickel. Rare earth magnets are also this kind. A ferromagnetic material will stick to a magnet and can be used to make permanent magnets (e.g., by melting it and then allowing it to harden while exposed to a magnetic field).
Second, also well known even among gradeschool children, materials such as copper won't (normally) stick to
Not real practical (Score:2)
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No such thing as instantaneous anyway, magnetic fields propagate at the speed of light. At best, it's the magnetic equivalent of a superconductor. Not that such a thing would be uninteresting, but we're not violating any laws of physics.
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Re:Not real practical (Score:5, Interesting)
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.
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If it were possible to split a crystal and communicate between two entangled halves (assume no FTL, causality violations, etc.), the technology would be classified and locked up immediately. No government, particularly our own, would tolerate the existence of a communications system that operated over an uninterceptable medium.
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If it were possible to split a crystal and communicate
You do know that quantum entanglement does exactly that, right?
You do know that it doesn't, right?
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Just because we humans can not commnicate using quantum entanglement over large distances violating causality.
Does not mean that the universe itself cannot violate causality. Our observations are limited. To the point that we may never see or understand causality being broken.
Now on the other side there are a few papers out there demonstrating that causality has been observed being boken. For example the result of an experiment being predetermined.
All this means is that human beings living in a relativistic
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I rememeber getting that idea from reading about quantum teleportation. When you change an entangled pair of particles, the state changes for both simultaneously. No time differential. http://en.wikipedia.org/wiki/Quantum_teleportation [wikipedia.org]
The wikipedia isnt the only source. I have read about this one a number of times, some whitepapers, some pop-sci writeups, some discovery, some arguing on slashdot and other places. The wiki article seems pretty well to define what I'm talking about in more technical terms. We
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To try to be more clear and cite from the article directly:
Alice provides her two measured classical bits, which indicate which of the four states Bob possesses. Bob applies a unitary transformation which depends on the classical bits he obtains from Alice, transforming his qubit into an identical re-creation of the qubit c.
This is how quantum encryptian works. You can tell that Alice did something because Bobs bits react a specific way to Alices information. There is no way to tell if this happend instantl
Quantum computing... (Score:2)
Cold fusion on the horizon ? - better read this ! (Score:1)
recently Hitachi has replicated Mitsubishi's "low energy nuclear transmutation".
to be able to understand how confused you are start with reading this peer reviewed paper from 2002: http://lenr-canr.org/acrobat/IwamuraYelementalaa.pdf
better stop using "cold fusion" as an example for crackpot science.
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recently Hitachi has replicated Mitsubishi's "low energy nuclear transmutation".
to be able to understand how confused you are start with reading this peer reviewed paper from 2002: http://lenr-canr.org/acrobat/IwamuraYelementalaa.pdf [lenr-canr.org]
better stop using "cold fusion" as an example for crackpot science.
spot on.
Lame! (Score:2)
As somebody essentially bereft of understanding of this 'quantum' stuff, I refuse to be satisfied until MIT develops a new magnetic state that both aids and hinders quantum computing until disturbed, at which point it only does one or the other!
It will turn out .... (Score:2)
A third kind of magnetism? (Score:2)
Time to change the DSM5! (Score:2)
This new one should be called tri-polar disorder... I propose third of march as 'world tripolar day'!
PLS QSL VIA BURO (Score:2)
Theorists had said QSLs might exist, but one had never been demonstrated before.
I call BS! [google.com]