Information teleported between two computer chips for the first time

newatlas ^ | December 26, 2019 | Michael Irving December 26, 2019

[Eddie01]

Scientists at the University of Bristol and the Technical University of Denmark have achieved quantum teleportation between two computer chips for the first time. The team managed to send information from one chip to another instantly without them being physically or electronically connected, in a feat that opens the door for quantum computers and quantum internet.

This kind of teleportation is made possible by a phenomenon called quantum entanglement, where two particles become so entwined with each other that they can “communicate” over long distances. Changing the properties of one particle will cause the other to instantly change too, no matter how much space separates the two of them. In essence, information is being teleported between them.

Hypothetically, there’s no limit to the distance over which quantum teleportation can operate – and that raises some strange implications that puzzled even Einstein himself. Our current understanding of physics says that nothing can travel faster than the speed of light, and yet, with quantum teleportation, information appears to break that speed limit. Einstein dubbed it “spooky action at a distance.”

Harnessing this phenomenon could clearly be beneficial, and the new study helps bring that closer to reality. The team generated pairs of entangled photons on the chips, and then made a quantum measurement of one. This observation changes the state of the photon, and those changes are then instantly applied to the partner photon in the other chip.

“We were able to demonstrate a high-quality entanglement link across two chips in the lab, where photons on either chip share a single quantum state,” says Dan Llewellyn, co-author of the study. “Each chip was then fully programmed to perform a range of demonstrations which utilize the entanglement. The flagship demonstration was a two-chip teleportation experiment, whereby the individual quantum state of a particle is transmitted across the two chips after a quantum measurement is performed. This measurement utilizes the strange behavior of quantum physics, which simultaneously collapses the entanglement link and transfers the particle state to another particle already on the receiver chip.”

The team reported a teleportation success rate of 91 percent, and managed to perform some other functions that will be important for quantum computing. That includes entanglement swapping (where states can be passed between particles that have never directly interacted via a mediator), and entangling as many as four photons together.

Information has been teleported over much longer distances before – first across a room, then 25 km (15.5 mi), then 100 km (62 mi), and eventually over 1,200 km (746 mi) via satellite. It’s also been done between different parts of a single computer chip before, but teleporting between two different chips is a major breakthrough for quantum computing.

The research was published in the journal Nature Physics.

[Eddie01]

Ask one a the researchers.

In the meantime, Democrat’s first reaction was how do we use this technology for voter fraud.

[jdsteel]

Any technology distinguishable from magic is insufficiently advanced.

[ctdonath2]

Not instantly. Even gravity propagates no faster than c.

[Conan the Librarian]

Yes, the limiting factor in computers now is that they are faster than the time it takes for data to move from one side of the mother board to the other.

This would really be ground breaking.

[GingisK]

So, what was transmitted? A zero followed by a one?

[GingisK]

Not really true. The limiting factor is the access time of memory devices. That time is still slower than the propagation delay of the circuit.

[elbook]

.

BTW Quantum stuff requires a huge vat of near absolute zero liquid gas - perfect to have in your celphone.

I’m still dubious to the entanglement working (they make claims but the experiments are so flawed - kinda like global warming science...)

Usually the problem is more wishful thinking (again like MMglobalwarming ‘science’) that lets them decide that a 50-50 probability being cherry-picked is an ‘affirmative result’.

-

So far its just the latest touted claims that bring in grant money from ‘the rubes’ ...

.

[upchuck]

Can you hear me now? Need a bigger flux capacitor. :)

This is REALLY something. The uses stagger the imagination.

[minnesota_bound]

#1 particle entanglement?
Any FRysisists that can explain how that works?

When a guy meets a crazy women.....

[SunkenCiv]

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[Bullish]

Behold, our digital overlords.

[ConservativeMind]

This is funny to hear, because physicists claims “no information” can be transmitted in this way.

The fact that a particle was viewed causes the other particle to stop moving, which provides the only needed information. I stated this years ago here on Free Republic.

[LibWhacker]

Yes, you can transmit quantum states instantaneously. And that’s information, or a type of information. But you cannot send USEFUL information instantaneously. For instance, you could not quantumtatively (is that a word?) say, “The Klingons are going to hit you tomorrow at noon. Take cover,” to a colony four light years away, and expect it to be of any help to them. Or so I’ve heard.

[Triple]

If it can be done in a lab/experiment, they are pretty far down the path of knowing how it works.

[Triple]

Perhaps you should also submit your competing analysis to Nature.

Science loves a marketplace of ideas.

(But Science requires methodology, data, and analysis. Just saying it, no matter how many people you can get to agree, is insufficient.)

[Svartalfiar]

Entangled quantum states aren’t the same as information.

This article is fake news.

Yes, they are. Every single data point the lab can draw from the particles is information, it just may or may not be useable information. Right now, it's been generally observed that quantum entanglement is real. The biggest hurdle is how to use that: How do I alter my particle, so as to transmit useable info to the other one?

You do realize that binary is how computers work, right? on/off, up/down, that is how info is read and transmitted. If I can taqke several quantum particles, and change their states, than I now have a perfect transmitter/receiver, whose only time delay is how fast I can change those states. There is no speed of light/wires limiting radio contact, info getting from the HD to the GPU, etc. This would have huge implications not just in computers, but for military communications especially.

[Svartalfiar]

Yes, you can transmit quantum states instantaneously. And that’s information, or a type of information. But you cannot send USEFUL information instantaneously. For instance, you could not quantumtatively (is that a word?) say, “The Klingons are going to hit you tomorrow at noon. Take cover,” to a colony four light years away, and expect it to be of any help to them. Or so I’ve heard.

Well not yet. But once you know that it works, then it's just a matter of being able to write as well as read. All we do now is check one side's state (it's UP), so now we know the other side's state is DOWN, which is confirmed by measuring it as well. The actual 'teleportation' isn;t stuff the scientists are doing, it's just what they're observing with the particles.

And once you get the basic principles somewhat understood, is when you can start applying the knowledge: eventually we'll be able to write a state to the local particle, which in theory means that the far particle changes its state at the exact same time. As soon as we have that ability, we have near-perfect military communications (for a direct one-to-one situation). We have electronic devices (is this still considered electronics, really?) that have zero lag time between components. You can have internet anywhere in the world, no wires or wireless needed: your router simply is connected to your router-b that is wired to an ISP node. Everyone and their mother out in the middle of nowhere, TX or the middle of the ocean can have connectivity.

[infool7]

Would probably be great for timing the markets

unfortunately I have a hypothesis about

the conservation of relativity

that prevents me from thinking this is possible.

7

[Moonman62]

It’s not information. Information does not travel faster than light.

[Bloody Sam Roberts]

Our current understanding of physics says that nothing can travel faster than the speed of light

Wouldn't that be properly stated that nothing with mass can travel faster than the speed of light?