Realization of a multi-node quantum network of remote solid-state qubits

Abstract

The distribution of entangled states across the nodes of a future quantum internet will unlock fundamentally new technologies. Here we report on the experimental realization of a three-node entanglement-based quantum network. We combine remote quantum nodes based on diamond communication qubits into a scalable phase-stabilized architecture, supplemented with a robust memory qubit and local quantum logic. In addition, we achieve real-time communication and feed-forward gate operations across the network. We capitalize on the novel capabilities of this network to realize two canonical protocols without post-selection: the distribution of genuine multipartite entangled states across the three nodes and entanglement swapping through an intermediary node. Our work establishes a key platform for exploring, testing and developing multi-node quantum network protocols and a quantum network control stack.

9 pages, 5 figures, supplementary materials

References in corpus (8)

• The Quantum Internet
• Entanglement detection
• An Elementary Quantum Network of Single Atoms in Optical Cavities
• Realization of a multi-node quantum network of remote solid-state qubits
• Distributed Quantum Computation Based-on Small Quantum Registers
• A Quantum-Logic Gate between Distant Quantum-Network Modules
• Cavity quantum electrodynamics with color centers in diamond
• Quantum Anonymous Transmissions

Cited by in corpus (1)

• Realization of a multi-node quantum network of remote solid-state qubits