Quantum gate teleportation between separated qubits in a trapped-ion processor

TLDR

Teleporting a trapped‑ion quantum gate is essential for quantum processors, but scaling requires qubits to interact over larger distances, posing experimental challenges. They deterministically teleported a controlled‑NOT gate between two computational qubits in spatially separated zones in a segmented ion trap, demonstrating a feasible route toward scalable quantum information processors. Wan et al., Science, this issue p.

Abstract

Teleporting a trapped-ion quantum gate Gating—controlling the state of one qubit conditioned on the state of another—is a key procedure in all quantum information processors. As the scale of quantum processors increases, the qubits will need to interact over larger and larger distances, which presents an experimental challenge in solid-state architectures. Wan et al. implemented the 20-year-old theoretical proposal of quantum gate teleportation that allows separated qubits to interact effectively. They deterministically teleported a controlled-NOT gate between two computational qubits in spatially separated zones in a segmented ion trap, demonstrating a feasible route toward scalable quantum information processors. Science , this issue p. 875