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First entanglement-based quantum network

April 15, 2021

First entanglement-based quantum network

The middle node, Bob, has a physical connection to the outer nodes, Alice and Charlie, so Bob can have entanglement links established with both. “Once established, we were able to preserve the resulting entangled states, protecting them from noise,” says Sophie Hermans, a member of the research team from QuTech. QuTech in the Netherlands has established the first multi-node quantum network, by connecting three quantum processors through the mysterious process of entanglement. Coauthors Matteo Pompili (left) and Sophie Hermans (right), both PhD students, at one of the quantum network nodes. This entanglement-based quantum network will allow the researchers to develop and test quantum internet hardware, software and protocols. The research team created three quantum nodes, named Alice, Bob and Charlie. Before now, connecting multiple processors using entanglement was more a theory than a reality; previously, only two quantum devices have shared a direct physical link.

Article from Cosmos.