Quantum entanglement - this is some cool stuff

[Raeyok]

http://www.wired.com/wiredscience/2011/01/timelike-entanglement/

I just read this article on Wired and was fascinated. I'll copy and paste the first bit of the article for those who don't feel like clicking on a link.

In the weird world of quantum physics, two linked particles can share a single fate, even when they’re miles apart.

Now, two physicists have mathematically described how this spooky effect, called entanglement, could also bind particles across time.

If their proposal can be tested, it could help process information in quantum computers and test physicists’ basic understanding of the universe.

“You can send your quantum state into the future without traversing the middle time,” said quantum physicist S. Jay Olson of Australia’s University of Queensland, lead author of the new study.

In ordinary entanglement, two particles (usually electrons or photons) are so intimately bound that they share one quantum state — spin, momentum and a host of other variables — between them. One particle always “knows” what the other is doing. Make a measurement on one member of an entangled pair, and the other changes immediately.

Physicists have figured out how to use entanglement to encrypt messages in uncrackable codes and build ultrafast computers. Entanglement can also help transmit encyclopedias’ worth of information from one place to another using only a few atoms, a protocol called quantum teleportation.

In a new paper posted on the physics preprint website arXiv.org, Olson and Queensland colleague Timothy Ralph perform the math to show how these same tricks can send quantum messages not only from place to place, but from the past to the future.

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[Shadowed999]

Forget the nerd stuff man.Its not cool.


Awesome

[Skip]

Duuude.

[skelolego229]

this could open up a new era of tech

[LaCuckooRacha]

Quantum Entanglement is a suggested method of communication that would allow crystal-clear instant messages between stars and space ships.  This could establish reliable internet connection on a computer onboard a ship that is ~20ly away from Earth.

[ECrownofFire]

Quantum Entanglement is a suggested method of communication that would allow crystal-clear instant messages between stars and space ships.  This could establish reliable internet connection on a computer onboard a ship that is ~20ly away from Earth.

No, this is not what quantum entanglement is at all. Radio waves work perfectly fine anyway, and as a bonus, are actually able to go the speed of light. There is NOTHING in quantum physics (or any physics) that can break the speed of light.

this could open up a new era of tech

Quantum entanglement has been proven for 39 years.

[LaCuckooRacha]

No, this is not what quantum entanglement is at all. Radio waves work perfectly fine anyway, and as a bonus, are actually able to go the speed of light. There is NOTHING in quantum physics (or any physics) that can break the speed of light.

Nope, Quantum Entanglement causes two particles to react simultaneously no matter how far apart they are.  To then have one react would cause the other to do the same.  This would allow for binary signals to be sent without any energy transfer.  This does not go faster than the speed of light, as nothing is actually 'going'.

[Squideey]

FIVE MONTHS LATER

HEY GUYS WE BUILT A TELEPORTER

[Shadowed999]

Sorry to keep you in the dark guys but I already made a teleporter and a time machine. :C

[Otis Da HousKat]

Quantum entanglement has been proven for 39 years.

Indeed. My math professor last semester works with quantum computer technology and he told me the problem isn't having a working theory, but rather being able to apply the various theories and whatnot to a system that is large enough to be useful. Scientists have constructed arrays of entangled quantum dots, but not nearly to the scale to be useful for actual computing purposes; larger arrays that would be deteriorate in much less than a second.

[Fabio 555]

I have a feeling that this site gets all it's money from ads, just a thought...

[Dodger]

Indeed. My math professor last semester works with quantum computer technology and he told me the problem isn't having a working theory, but rather being able to apply the various theories and whatnot to a system that is large enough to be useful. Scientists have constructed arrays of entangled quantum dots, but not nearly to the scale to be useful for actual computing purposes; larger arrays that would be deteriorate in much less than a second.

So if we can't use this technological theory for practical use in computing, what other fields could this information maybe be applicable?

[.::Taboo::.]

oh i read about this before. despite being an english teacher i like to do anything, and i've been reading (half-assedly) articles and such about quantum physics for a little while now. turns out a LOT of the finds made in the fields would be great to benefit computers. which is wonderful for us all, though i find it odd that that's the only thing anyone's focusing on.

[Moriarty]

No, this is not what quantum entanglement is at all. Radio waves work perfectly fine anyway, and as a bonus, are actually able to go the speed of light. There is NOTHING in quantum physics (or any physics) that can break the speed of light.

Then lets increase the speed of light :D

[Freeze]

cool

You called?