The future of the quantum internet holds the promise of unprecedented power through the sharing of quantum information across networks. Quantum teleportation, a process that enables the reliable transfer of quantum information between distant nodes, even amid highly lossy network connections, is a key component of this innovative technological frontier.

In this episode, we are joined by Dr. Beukers and his team, who are leading the exploration of quantum teleportation. They discuss their groundbreaking work on quantum teleportation between remote, non-neighboring nodes in a quantum network. The network uses three optically connected nodes based on solid-state spin qubits.

Dr. Beukers et al. walk us through the preparation of the teleporter, the establishment of remote entanglement on the two links, the entanglement swapping on the middle node, and storage in a memory qubit. We delve into their findings that demonstrate that once successful preparation of the teleporter is heralded, arbitrary qubit states can be teleported with fidelity above the classical bound, even with unit efficiency.

Our conversation explores key innovations that made their work possible, including enhancements in the qubit readout procedure, active memory qubit protection during entanglement generation, and tailored heralding that reduces remote entanglement infidelities.

Join us as we delve into these cutting-edge developments with Dr. Beukers and his team. Their work not only provides a crucial building block for future quantum networks but also opens the door to exploring teleportation-based multi-node protocols and applications.

Keywords: Dr. Beukers, Quantum Teleportation, Quantum Internet, Quantum Networks, Solid-State Spin Qubits, Quantum Information, Remote Entanglement, Entanglement Swapping, Memory Qubit, Quantum Protocols.

Hermans, S.L.N., Pompili, M., Beukers, H.K.C. et al. Qubit teleportation between non-neighboring nodes in a quantum network. Nature 605, 663–668 (2022). https://doi.org/10.1038/s41586-022-04697-y