Controlled quantum dot array segmentation via highly tunable interdot tunnel coupling

Recent demonstrations using electron spins stored in quantum dots array as qubits are promising for developing a scalable computing platform. An ongoing effort is therefore aiming at the precise control of parameters larger and arrays which represents complex challenge. Partitioning system with help inter-dot tunnel barriers can lead to simplification tuning offers protection against unwanted charge displacement. In triple dot system, we demonstrate nanosecond rate permitting reach two extreme regimes, large GHz coupling sub-Hz isolation between adjacent dots. We use this novel development isolate sub part while performing displacement readout rest system. The degree over achieved unit cell should motivate future protocol tuning, manipulation including capability.