The gold structure on the surface of the diamond sample allows control of the quantum processor (Credit Matteo Pompili for QuTech).Photo courtesy of Springer Nature
China News Service, Beijing, May 26 (Reporter Sun Zifa) The internationally renowned academic journal "Nature" recently published a quantum physics research paper. The researchers demonstrated that in a three-node quantum network, between two non-adjacentnodesteleportation of quantum information.This result is an important step towards a quantum internet.
An artistic display of the quantum teleportation process in a network scenario (source Scixel for QuTech).Photo courtesy of Springer Nature
According to the paper, quantum teleportation can transmit quantum information from one location to another, which has potential applications in secure communications, quantum computing, and the development of the next generation of the Internet.The experimental demonstrations of this effect reported so far have been limited to two connected nodes, and teleportation between non-adjacent nodes is crucial for the construction of quantum networks such as the quantum internet.
Sophie Hermans and Ronald Hanson of Delft University of Technology in the Netherlands are the first and corresponding authors of the paper respectively. They and their colleagues operated a quantum network with three optical fibers connected to each other. A row of nodes - Alice, Bob, and Charlie, where there are direct connections between Alice and Bob and between Bob and Charlie, but not between Alice and Charlie.To realize teleportation, the adjacent nodes must first share the quantum entanglement state, and then perform quantum exchange at the intermediate node Bob, so as to form entanglement between Alice and Charlie, so that quantum information can be directly teleported between them.Completing each step of the process while preserving fragile quantum information requires improvements in the preparation, manipulation and reading of such quantum states.
Alice, recipient of teleportation quantum information (Credit: Marieke de Lorijn for QuTech).Photo courtesy of Springer Nature
The authors note that the sharing of information between non-adjacent nodes demonstrated in their study may represent a step closer to building quantum networks capable of communicating via quantum information teleportation.
The researchers are working on a quantum network node (Image source Marieke de Lorijin for QuTech).Photo courtesy of Springer Nature
However, in the "News and Views" article published at the same time in "Nature", peer experts from the National Institute of Standards and Technology and the Korea Institute of Science and Technology believe that there is still a way to achieve ubiquitous teleportation technology around quantum networks. a few steps away.They concluded that several features of the newly studied system need to be improved in the future to support multiple teleportations and to build large-scale quantum networks.(Finish)
