Curator's Take
This article marks a concrete step toward modular quantum computers by showing that three spatially separated trapped‑ion nodes can be entangled into a GHZ state using fiber‑linked photonic interfaces. It builds on recent advances in ion‑photon coupling and distributed Bell tests, demonstrating that high‑fidelity multipartite entanglement is achievable across hardware modules rather than within a single trap. While the experiment is limited to a few meters and photon loss remains a challenge, it validates a scalable architecture for building larger quantum networks and fault‑tolerant processors.
— Mark Eatherly
Summary
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 post Duke University and IonQ Demonstrate Tripartite Entanglement of Remote Atomic Qubits appeared first on Quantum Computing Report .