Two interacting hole spin qubits (IMAGE) University of Basel Caption Two interacting hole spin qubits. When a hole (magenta/yellow) tunnels from one site to the other its spin (arrow) rotates on account of the so-called spin-orbit coupling, leading to anisotropic interactions depicted by the surrounding bubbles. Credit NCCR SPIN Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.