A groundbreaking study, conducted by Delft University of Technology and QuTech in the Netherlands, seeks to tackle the challenge of limited 'mobility' in quantum dot qubits. While quantum dots can be densely packed onto chips, their connection configurations are predetermined during fabrication, which restricts the range of error correction strategies that can be employed. In this research, a linearly arranged chip housing six quantum dots was developed, successfully enabling the transfer of single-electron spin qubits across different quantum dots. Furthermore, the study accomplished tasks such as implementing two-qubit gates, verifying entanglement, and achieving quantum teleportation. Notably, the success rate for two-qubit gates surpassed 99%, while quantum teleportation achieved a success rate of around 87%. Although there remains a considerable distance to bridge before these findings can be applied to complex computational tasks, the research team envisions a future where chips are designed with distinct 'storage zones,' 'interaction zones,' and connecting pathways, allowing for flexible, on-demand manipulation of qubits.
