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Skunkmere
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so this technology is going to one day be able to transport bigger stuff than a photon. or wtf
Skunkmere said:so this technology is going to one day be able to transport bigger stuff than a photon. or wtf
meteor said:Well, I think that the title of the thread is misleading, the team of Zeilinger only demonstratrated long distance quantum entanglement in the Danube experiment,concretely an entanglement distance of 600 m, but there was not teleportation performed in the experiment
humanino said:It depends what one considers to be teleportation : we know how to transmit information "instantaneously". But relativity prevents it for energy.
There is teleportation of information in labs like everyday or so
There will never be energy teleportation
humanino said:I am deeply confused. I totally agree with Zz's 1 & 2 points.
But I don't understand 3. When did SR made statements about information ? Are you saying that energy is a form of information ? I thought those two things were different. I thought information is a well defined concept in QM only.
You certainly already heard it : consider a huge scissors pair, at the scale of the solar system for instance. When the scissors are closing, the intersection of the two arms is traveling way faster than c. It is information traveling faster than c, but not associated with energy traveling faster than c. Where am I wrong ?
humanino said:Thank you very much Zz !
If you or anyone has a reference on what SR has to say about information by itself and how it is linked to energy, I would appreciate too. The two previous links are examples where information is not traveling faster the c. But as far as I understand classical texts on SR (and GR) they don't talk about information.
However, even for a "genuine" physical wave, i.e., a chain of sequentially dependent events, the phase velocity does not necessarily correspond to the speed at which energy or information is propagating. This is partly a semantical issue, because in order to actually convey information, a signal cannot be a simple periodic wave, so we must consider non-periodic signals, making the notion of "phase" somewhat ambiguous.
Quantum teleportation across the Danube refers to a recent scientific achievement in which researchers were able to successfully teleport quantum information across a distance of 14 kilometers along the Danube River in Austria. This was done using a process called quantum entanglement, which allows for the transfer of information between two particles instantaneously, regardless of the distance between them.
Quantum teleportation across the Danube involves three main steps: creating a pair of entangled photons, sending one photon to the receiving station on the other side of the Danube, and using the entangled photon to transmit information about the quantum state of the original photon. This allows for the exact replica of the original photon to be created at the receiving station, effectively teleporting the quantum information.
Quantum teleportation across the Danube has potential applications in quantum communication and quantum computing. It could potentially lead to more secure and efficient methods of data transfer, as well as advancements in quantum computing technology.
One of the main challenges in achieving quantum teleportation across the Danube was maintaining the delicate quantum state of the entangled photons over a long distance. This required advanced technology and precise control over the experimental setup.
The successful demonstration of quantum teleportation across the Danube is a significant achievement in the field of quantum physics and has potential implications for our understanding of the fundamental principles of the universe. It also opens up new possibilities for quantum communication and computing, which could greatly impact various industries and technologies in the future.