from Galaxy Quest where the alien turned inside out during transport...
Posted on 05/29/2014 5:34:05 PM PDT by SeekAndFind
Albert Einstein once told a friend that quantum mechanics doesn't hold water in his scientific world view because "physics should represent a reality in time and space, free from spooky actions at a distance." That spooky action at a distance is entanglement, a quantum phenomenon in which two particles, separated by any amount of distance, can instantaneously affect one another as if part of a unified system.
Now, scientists have successfully hijacked that quantum weirdness -- doing so reliably for the first time -- to produce what many sci-fi fans have long dreamt up: teleportation. No, not beaming humans aboard the USS Enterprise, but the teleportation of data.
Physicists at the Kavli Institute of Nanoscience, part of the Delft University of Technology in the Netherlands, report that they sent quantum data concerning the spin state of an electron to another electron about 10 feet away. The results can be replicated accurately 100 percent of the time, the team said.
Thanks to the strange properties of entanglement, this allows for that data -- only quantum data, not classical information like messages or even simple bits -- to be teleported seemingly faster than the speed of light. The news was reported first by The New York Times on Thursday, following the publication of a paper in the journal Science.
Proving Einstein wrong about the purview and completeness of quantum mechanics is not just an academic boasting contest. Proving the existence of entanglement and teleportation -- and getting experiments to work efficiently, in larger systems and at greater distances -- holds the key to translating quantum mechanics to practical applications, like quantum computing. For instance, quantum computers could utilize that speed to unlock a whole new generation of unprecedented computing power.
Quantum teleportation is not teleportation in the sense one might think. It involves achieving a certain set of parameters that then allow properties of one quantum system to get tangled up with another so that observations are reflected simultaneously, thereby "teleporting" the information from one place to another.
To do this, researchers at Delft first had to create qubits out of classical bits, in this case electrons trapped in diamonds at extremely low temperatures that allow their quantum properties, like spin, to be observed.
A qubit is a unit of quantum data that can hold multiple values simultaneously thanks to an equally integral quantum phenomenon called superposition, a term fans of the field will accurately associate with Heisenberg's uncertainty principal that says something exists in all possible states until it is observed. It's the same way quantum computing may one day surpass the speeds of classical computing by allowing calculations to spread bit values between 0, 1 or any probabilistic value between the two numbers -- in other words, a superposition of both figures.
With quibits separated by a distance of three meters, the researchers were able to observe and record the spin of one electron and see that reflected in the other qubit instantly. It's an admittedly wonky conception of data teleportation that requires a little head scratching before it begins to clear up.
Still, its effects could be far reaching. The researchers are attempting to increase that distance to more than a kilometer, which would be ample leeway to test whether or not entanglement was a consistent phenomenon and that the information was traveling faster than the speed of light. Such experiments would more definitively knock down Einstein's disqualification of entanglement due to its violation of classical mechanics.
"There is a big race going on between five or six groups to prove Einstein wrong," Ronald Hanson, a physicist leading the research at Delft, told The New York Times. "There is one very big fish."
Gesundheit...
LOL
Sorry, but the reason I gave the definition for teleport is that the word does not mean replicate, observe, etc. It means to transport (a body).
The “teleportation” they are talking about here is not the deconstruction of a body and reconstruction of another. It is an observation on the entanglement of data associated with two separate bodies. I see nothing in the article to disabuse the notion that this was a replication (or observation of entanglement, if you prefer), rather than the actual deconstruction/reconstruction of the original body.
Words mean things - and I do not think that word means what they think it means.
They’re not medieval.
I’m averse to a rewriting of measurements that came out of the French Revolution.
Of course there is, given they can reproduce the experiment at one kilometer.
I find that hard to believe.
Electricity is defined as being a pressurized flow of electrons. AC is back and forth and DC is a single direction flow.
Meanwhile, Edward Frenkel uses an analogy to explain "quantum field theory."
Frenkel writes in his book "Love and Math,: ... "... think of quantum field theory as a culinary recipe. Then the ingredients of the dish we are making are the analogues of particles, and the way we mix them together is like the interaction between the particles."
1950 sci-fi movie “The Fly”
what could possibly go wrong?
You might want to read David Bohm and the Implicate Order.
Brundlefly?
A quantum particle is defined by nothing except for its wave function. If the wave function of a particle is transmitted, the particle is transmitted. It's not a copy. It's not a clone. It's the actual particle. In order to teleport the particle, all you need to send is the state information. That's all.
You are right about that. The experiment described was carried out over at least a 10 km "zero distance" by an Italian concern more than a year ago, already working on a 110 km non-separation.
The state of science journalism is nearly as moribund as political writing in New York.
from Galaxy Quest where the alien turned inside out during transport...
I’m sorry if you can’t seem to understand that quantum teleportation doesn’t allow transmission of any usable information faster than the speed of light.
Maybe YOU need to read the article again.
It wouldn’t matter if the did the experiment from the earth to the moon, because they can’t measure anything without transmitting information slower than c between the two locations.
I think people are just stuck thinking of the “solid particle” model, they can’t conceive that we are really talking about waves here.
What is one standing wave versus ninety-two standing waves, if they are superimposed on top of each other, or in close proximity? You can’t lay your finger on any physical substance and say “there is the wave”, it’s just an oscillation in the medium. If you have more than one oscillation pattern, there is still nothing to point at, even if you have ninety-two of them.
Once they know the distance between the two point they don’t need to transmit information between the two points to measure.
And I am sorry that your mind is too old and has grown too inflexible to embrace a new perspective. There is much wonder, and the immense joy of finding things out. Apparently your mind is so shuttered now that you are incapable of seeing the wonderfulness unfolding.
No, but they do need to transmit classical information between the two points in order to complete the teleportation, and that classical information can only be transmitted slower than the speed of light.
“There is much wonder, and the immense joy of finding things out.”
Then why don’t you find out what the phenomenon being discussed in the article actually is before you try to opine about it?
So, you now try to assign to me a specious position, that of not having read the article and thus not understanding what is being done. That makes you more comfy does it? Enjoy
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