#QuantumInternet: #Teleportation trick shows promise for future secure networks:

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Teleportation trick shows promise for a future quantum internet
Quantum information has been sent from one side of a simple quantum network to the other, passing through an intermediate network node without affecting it
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PHYSICS 25 May 2022
By Alex Wilkins

quantum entanglement
Artist’s impression of quantum entanglement, a property being explored to build a quantum internet

Shutterstock/Jurik Peter; Kohji Asakawa/Pixabay

A quantum network can teleport information between unconnected nodes using so-called quantum entanglement – an important step towards building a super-secure quantum internet.

Objects that share a quantum entanglement have linked properties. Entanglement is central to proposals for a quantum internet, which could greatly improve privacy compared with current internet systems. One idea is to build a network of connected quantum bits, or qubits, which are entangled with qubits elsewhere in the network rather than with the neighbouring nodes they are directly linked with. But entanglement of these network qubits has so far only been demonstrated with directly connected qubits.

Ronald Hanson at Delft University of Technology in the Netherlands and his colleagues built a simple network containing a number of diamond-based qubits arranged into three nodes, dubbed Alice, Bob and Charlie. There was no direct connection between Alice and Charlie, only an indirect link each shared with Bob. But Alice and Charlie shared a quantum entanglement, which means it is impossible to measure information from one of them without changing the state of the other.


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Read more: https://www.newscientist.com/article/2321895-teleportation-trick-shows-promise-for-a-future-quantum-internet/#ixzz7UKvys1kG

https://www.newscientist.com/article/2321895-teleportation-trick-shows-promise-for-a-future-quantum-internet/