The First Quantum Teleportation Complex Paves the Way for the Next Generation of the Internet



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Scientists knew the theoretical possibility of a multidimensional quantum teleportation for nearly three decades, but the research team had to develop a new experimental method and the technology needed to finally achieve it.

Researchers from the Austrian Academy of Sciences and the University of Vienna, as well as their colleagues from the University of Science and Technology of China, have achieved for the first time in history to teleport three-dimensional quantum states, or qutrits.

According to phys.org, while scientists knew that a multidimensional quantum teleportation was possible since the 1990s, the team had to first develop the necessary means to achieve this remarkable feat.

"We first had to design an experimental method to implement high-dimensional teleportation, as well as to develop the necessary technology," said Manuel Erhard of the Institute for Quantum Optics and Quantum Optics. quantum information of the Austrian Academy of Sciences Vienna.

The method of teleporting a quantum state "encoded in the possible paths that a photon can borrow" involves the use of a multiport beam splitter that directs photons through multiple inputs and outputs and connects all the optical fibers between them ", the researchers also using" photons "that can interfere with other particles of this type.

As a result, a "clever selection of certain interference patterns" essentially allows the quantum information to be transferred from one photon to another without the two being physically in interaction, Erhard finding that this experimental concept can be extended to a number of dimensions in principle. .

As the media point out, this achievement marks an "important step" in the production of practical applications such as the "quantum internet future", because 3D quantum systems can carry larger amounts of information than their counterparts. two-dimensional equivalents.

"This result could help connect quantum computers with information capabilities other than qubits," said Anton Zeilinger of the Austrian Academy of Sciences and the University of Vienna, while Jian-Wei Pan of the China University of Science and Technology claimed that "the foundation for the next generation of quantum networking systems is built on our fundamental research today."

Quantum physicists would now devote themselves to the teleportation of "the complete quantum state of a photon or atom".

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