Quantum teleportation is an important means of communication that transfers quantum states. To put it in a nutshell, quantum information encoded in photons is transmitted remotely from one place to another.
Recently, Pan Jianwei and Zhang Qiang, professors from the University of Science and Technology of China, cooperated with relevant agencies to realize the quantum state invisible transmission between independent quantum sources pre-entangled and distributed for the first time on Hefei Quantum Metro Test Network.
The research was published online in the UK on "Nature Photonics" on September 19. Also published on the same day the Canadian research team quantum teleportation experimental results. These two independent studies show that the quantum teleportation of inter-city networks is technically feasible, which lays a solid foundation for the construction of scalable quantum networks in the future.
Information Figure: Pan Jianwei (center) and its team
According to Zhang Qiang, the existing quantum secure communications mainly encrypt and transmit the classical information through the quantum key. With the development of technology, the final quantum secure communication will realize the quantum information transmission. The quantum teleportation through the optical fiber network is expected Great for increased internet connection security and strength. However, the use of optical fiber network for long-distance quantum teleportation requires an independent light source, and the long-distance transmission, the two light beams have no difference, a quantum teleportation of the technical challenges.
It is reported that quantum teleportation (Quantum teleportation), also known as quantum teleportation, quantum teleportation, quantum teleportation, quantum teleportation or quantum teleportation, is a method of using distributed quantum entanglement with some physical information (physical information) To transfer the quantum state to a position of any distance. Is a new way of communication. It transfers the quantum information which is no longer the classical information but the quantum states. With the help of quantum entanglement, the quantum state to be transmitted goes through the "space-time transmission" described in science fiction novels, mysteriously disappears in one place, Do not need to carry any carrier, but also mysteriously appeared in another place.
It must be noted that quantum teleportation does not transmit anything or energy. Such techniques are quite helpful in quantum information and quantum computation. However, this method is unable to pass the traditional information, it can not be used in the ultra-light speed communication above. Quantum teleconference has nothing to do with the so-called momentary movement. Quantum teleconferencing can not transfer the system itself, nor can it be used to arrange molecules to make objects on the other end.
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