Automatic Estimation of High Dimensional Coulomb Diamonds Using Sparse Measurements

Each quantum dot in spin-based quantum processing is populated with exactly one electron. This requires that each gate voltage be carefully tuned to lie within the charge-stability area (the \”Coulomb Diamond”) associated the dot range. The authors developed a sparse-acquisition technique to learn the boundaries of the Coulomb diamonds from a few measurements. Hardware-triggered line search in the gate voltage space of a quadruple silicon dot. Smart search directions are proposed by an active learning algorithm.

Source:
https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.18.064040