According to media reports, the physics researcher at the University of Geneva in Switzerland once again proved the possibility of quantum information transmission through successful experiments. They have completed a successful experiment of "transferring information from light to matter" - passing the quantum state of a photon through a fiber optic cable to the receiving end, 25 km away.
Photons in quantum entangled states can completely reproduce information and realize quantum information transmission. Successfully verified the quantum information transmission between subatoms of quantum entangled states at a farther distance of 25 km. The team successfully conducted a 6 km quantum information transmission experiment in 2003.
This experiment involves the same quantum state information by creating a pair of quantum entangled photons (photons A, B). One of the photons A is sent to the other end of the cable by means of a laser, while photon B is sent to a crystal "receiving end" which can store the photon state (pyrosilicate). At the same time, the photon C is hit into the cable and collided with the photon A, attempting to obliterate the quantum state information in the photon C and the photon A.
The researchers finally found through the measuring device that the collision did not cause the information elimination of the photon C quantum state, but the information contained in the entangled photon B. That is, the information contained in photon C is magically "transferred" to photons B in the crystal. It was confirmed that the quantum state of a photon can be preserved without directly contacting the other party. Realize "quantum entanglement" and realize quantum information transmission. In this way, the crystal can act as a memory for storing quantum information, which can be synchronized with the transmitted photons.
The researchers said that the results of this study further prove the possibility of quantum information transmission over long distances, which can be applied to quantum state encryption. The field of quantum cloud computing certainly includes the final implementation of quantum information transmission.
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