High-fidelity teleportation of a logical qubit using transversal gates and lattice surgery

https://www.science.org/doi/10.1126/science.adp6016 Quantum entanglement and the teleportation of a quantum state across the processor are key ingredients in quantum computing. The fragility of the quantum states, however, requires error correction codes to ensure their faithful processing. Using a trapped-ion platform consisting of up to 30 trapped ions, the Quantinuum H2 quantum processor, Ryan-Anderson et al. demonstrate the fault-tolerant teleportation of quantum states. The implemented error-correcting color code effectively stabilizes the qubits, allowing quantum teleportation to be carried out in a fault-tolerant manner. The results are promising for trapped-ion–based quantum computing platforms. —Ian S. Osborne