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Alex Jong
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Hey, i hear about quantum teleportation on the news today. They said that they successfully teleported information. Can someone please explain it to me in a simple way so that a 13 y/o can understand it?
thephystudent said:How about all the relativistic paradoxes like the pole-barn?
TGlad said:Using the Many Worlds interpretation of quantum theory, is 'action at a distance' still a strange feature?
In my mind, if there is no wave function collapse then there is nothing unusual about the fact that finding out information on one particle will imply the same information on a 'entangled' particle light years away.
Or am I wrong and there is still some action happening at a distance?
TGlad said:Using the Many Worlds interpretation of quantum theory, is 'action at a distance' still a strange feature?
In my mind, if there is no wave function collapse then there is nothing unusual about the fact that finding out information on one particle will imply the same information on a 'entangled' particle light years away.
Or am I wrong and there is still some action happening at a distance?
The experiment you mention is consistent with modern QFT and does not violate causality in any way.thephystudent said:It seems to me you can break causality this way?
thephystudent said:if sending qbits goes instantly, in the frame of the barn, the vase falls and in the frame of the pole it doesn't.
Alex Jong said:Hey, i hear about quantum teleportation on the news today. They said that they successfully teleported information. Can someone please explain it to me in a simple way so that a 13 y/o can understand it?
Thinkor said:They have successfully created the same information in two places simultaneously.
naima said:simultaneously? the article cites the non cloning theorem.
Thinkor said:They have not successfully teleported true information. They have successfully created the same information in two places simultaneously.
Strilanc said:This is incorrect. Quantum teleportation is a way of moving quantum information, not a way of creating entangled pairs.
Thinkor said:What I wrote was "They have not successfully teleported true information. They have successfully created the same information in two places simultaneously."
To "teleport quantum information" (not "true information") you need to create an entangled state. Nothing is really "moved" between the two locations. The state is resolved instantaneously in both when the entangled state is resolved by querying it at either location. This is called "quantum teleportation" of "quantum information". Essentially it creates the same information in two places simultaneously.
wikipedia said:Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location.
thephystudent said:So in fact, there is not much difference with the classical example of the singlet where you measure one particle and it appears to collapse in spin up and you know the other one collapses in spin down instantly?
Quantum teleportation is a process in which quantum information (such as the exact state of an atom or photon) is transmitted from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location.
Quantum teleportation works by using entanglement, a phenomenon in which two particles become connected and share a quantum state. The information about the original particle is encoded onto the entangled particles and then transmitted to the receiving location, where the original state is reconstructed using the information received.
No, quantum teleportation is not like the teleportation seen in science fiction. It does not involve physically transporting matter from one location to another. Instead, it involves the transfer of information about the state of a particle.
Quantum teleportation has potential applications in quantum computing, quantum communication, and quantum cryptography. It could also be used for secure communication and data transfer, as well as in the development of new technologies.
While quantum teleportation has been successfully demonstrated in experiments, it is not yet being used in practical applications. However, research and development in this field is ongoing and it is possible that it may be used in the future for various purposes.