Posted on 12/27/2019 12:24:35 PM PST by 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.
Anyone who does is either lying or should be posting it somewhere other than an internet forum.
Imagine you have a particle that decays into two parts. They have a property which we’ll simply call UP or DOWN, and they are opposites of each other.
In quantum physics the state is unknown until you measure it.
But as soon as you measure one of the particles, and you know it’s state (up or down) then the other particle immediately has the opposite property. If you measure it as up then the other particle is down.
No matter how far apart the particles are, including the entire universe. The info dos not travel at the speed of light, it it literally instantaneous.
That’s how Star fleet does it’s sub-space communications.
Yes -instantaneous means at the same time, no matter how far apart the particles are- including across the universe.
the order to invade was garbled...
‘sub-space interference”...
But I have a sneaking suspicion that what we are perceiving is not quantum teleportation, because there is no distance involved. There is no distance involved because the particles are not entangled, but are actually the same particle existing in realms we cannot perceive.
So what we do perceive as quantum teleportation (or communication) is really change of states induced on a single particle which we can only partially perceive as two “entangled” particles.
Or, I could be suffering from too much eggnog.
One of those things where seeing is believing and not until then.
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.
...
Entangled quantum states aren’t the same as information.
This article is fake news.
You may want to review the following and get back to us.
https://www.nature.com/articles/s41567-019-0727-x
Abstract:
Integrated optics provides a versatile platform for quantum information processing and transceiving with photons1,2,3,4,5,6,7,8. The implementation of quantum protocols requires the capability to generate multiple high-quality single photons and process photons with multiple high-fidelity operators9,10,11. However, previous experimental demonstrations were faced by major challenges in realizing sufficiently high-quality multi-photon sources and multi-qubit operators in a single integrated system4,5,6,7,8, and fully chip-based implementations of multi-qubit quantum tasks remain a significant challenge1,2,3. Here, we report the demonstration of chip-to-chip quantum teleportation and genuine multipartite entanglement, the core functionalities in quantum technologies, on silicon-photonic circuitry. Four single photons with high purity and indistinguishablity are produced in an array of microresonator sources, without requiring any spectral filtering. Up to four qubits are processed in a reprogrammable linear-optic quantum circuit that facilitates Bell projection and fusion operation. The generation, processing, transceiving and measurement of multi-photon multi-qubit states are all achieved in micrometre-scale silicon chips, fabricated by the complementary metal–oxide–semiconductor process. Our work lays the groundwork for large-scale integrated photonic quantum technologies for communications and computations.
...
What was the Transfer rate in Bits Per Second?
What was the Error rate?
These scientist using photons may have unlocked the properties of light worth exploring if man wants to populate distant planets. If our planet becomes uninhabitable, the words, “Beam me up Scotty!” may be the escape command.
Leo Esaki, Ivar Giaever and Brian Josephson discovered tunneling of superconducting Cooper pairs.
It would be four years before we had the first operational MRI machine.
That doesn’t change a thing.
If you understood it, you’d know you are posting fake news.
Information does not travel faster than light.
And yet there is the whole concept of non-locality. And there is peculiar behavior of plasmas. And so on.
they can get back to me when they can teleport a quantum-entangled pizza and a six-pack of beer ...
Paging Jeff Goldblum....
The application for real time communication between spacecraft and earth is huge when it’s perfected.
Everything exists in and of different frequencies of consciousness.
This is quantum entanglement.
later
So.... You make some photons that are 100% pure, EXACTLY identical. They react identically to the same single stimulus.
You put one of the photons in a photon transporter, an carry it from New York to Los Angeles.
When you change the state of the photon in New York, the one in Los Angeles changes to the exact same state at exactly the same time.
Quantum Teleportation.
Now what did you use to measure that?
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