Multipartite mixed-species entanglement over a quantum network
Abstract
We generate multipartite entangled states of two, three, and four matter qubits, where the entanglement is distributed over macroscopic distances via a photonic network link. Trapped-ion Sr + 88 qubits are entangled directly via an optical fibre link, and the entanglement is subsequently extended to Ca + 43 memory qubits cotrapped in each network node, using local mixed-species logic gates. We create remotely entangled Sr + − Ca + and Ca + − Ca + states, as well as mixed-species Greenberger-Horne-Zeilinger (GHZ) states of up to four qubits. We demonstrate storage of the remotely entangled memory qubits for ∼ 10 s , more than 100 × the state creation time.
Fields of Study & Subjects
Quantum Information and Cryptography
Quantum Computing Algorithms and Architecture
Quantum Mechanics and Applications
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 137
- Issue
- 16
- Publication date
- 15 May 2026
- Language
- EN