Trapped ions stay entangled 100 times longer in this network

Researchers at the University of Oxford and Oxford Ionics have achieved entanglement of two, three and four matter qubits across a photonic network link. The work demonstrates remotely entangled strontium and calcium ions, as well as mixed-species GHZ states, and extends the storage time of these remotely-entangled memory qubits to more than 100 times the creation time. This advance addresses a key challenge in building scalable quantum networks by integrating robust quantum memories with photonic interfaces. The generation of multipartite entanglement is critical for applications like distributed quantum computing and quantum sensing. Trapped ions within a quantum network maintained entanglement for more than 100 times the creation time. This preservation of quantum states, achieved by researchers using strontium and calcium ions,…