IonQ and Duke University researchers successfully demonstrated remote entanglement across a three-node quantum network. The team recorded a fidelity rate between 84.1% and 88.1%. This achievement represents the first fully-distributed Greenberger-Horne-Zeilinger (GHZ) state using individually controlled atomic qubits.
The experiment utilized photonic interconnects to link three spatially separated hardware modules. Each module contained a single atomic ion qubit.
Modular architecture offers a solution for scaling quantum processors beyond the limits of single-chip designs. The breakthrough supports the development of distributed quantum computing, secure communication, and a future quantum internet.