Duke University and IonQ Demonstrate Tripartite Entanglement of Remote Atomic Qubits

Researchers from the Duke Quantum Center and IonQ have demonstrated the distributed generation of a Greenberger–Horne–Zeilinger (GHZ) state across a three-node quantum network using individual trapped atomic ions. The experimental configuration consisted of three spatially separated hardware modules positioned approximately 2 meters apart, linked by 3-meter single-mode optical fibers to a centralized, free-space GHZ-state generator. […]

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