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Duke University and IonQ Demonstrate Tripartite Entanglement of Remote Atomic Qubits - Quantum Computing Report
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. The networking setup achieved remote tripartite entanglement without requiring local two-qubit gates or post-selection protocols, establishing a bounded atomic state fidelity between 0.841(17) and 0.881(17) at an entanglement generation rate of 0.095(5) s−1. Ion-Photon Entanglement Mechanics and Centralized Interference Each hardware node isolates a single 138Ba+ (barium) [...]
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Duke University and IonQ Demonstrate Tripartite Entanglement of Remote Atomic Qubits - Quantum Computing Report
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…