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Realization of a multinode quantum network of remote solid-state qubits.
M Pompili1,2, S L N Hermans1,2, S Baier1,2
1QuTech, Delft University of Technology, 2628 CJ Delft, Netherlands.
Science (New York, N.Y.)
|April 16, 2021
Summary
Researchers built a three-node quantum network using diamond qubits to distribute entangled states. This demonstrates key protocols for a future quantum internet, enabling new technologies.
Area of Science:
- Quantum networking
- Quantum information science
- Quantum communication
Background:
- Entangled states are crucial for future quantum technologies.
- Building multi-node quantum networks is essential for a quantum internet.
Purpose of the Study:
- To realize a three-node entanglement-based quantum network.
- To demonstrate key quantum network protocols without postselection.
Main Methods:
- Utilized remote quantum nodes based on diamond communication qubits.
- Implemented a scalable phase-stabilized architecture with memory qubits and local quantum logic.
- Achieved real-time communication and feed-forward gate operations.
Main Results:
- Successfully distributed genuine multipartite entangled states across three nodes.
- Demonstrated entanglement swapping through an intermediary node.
- Operated two quantum network protocols without the need for postselection.
Conclusions:
- Established a key platform for developing multinode quantum network protocols.
- Paved the way for testing and advancing a quantum network control stack.
- Enabled exploration of new quantum technologies reliant on distributed entanglement.
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