Automated extraction of capacitive coupling for quantum dot systems

In fact, the first demonstrations of QD A typical accumulation-mode QD device consists of two-qubit gates with fidelities exceeding the thresholds two sets of gates--plungers and barriers--that collectively for fault-tolerant computing were developed in 2022 [4-control the overall potential profile, the QD-specific 6]. However, because the individual charge carriers that single-particle energy detuning of individual QDs, the make up qubits have electrochemical sensitivity to minor tunnel couplings between QDs, and tunnel rates between impurities and imperfections, calibration and tuning of the outermost QDs and reservoirs. Ideally, each plunger QD devices is a nontrivial and time-consuming process, gate would affect only the electrochemical potential of with each QD requiring careful adjustment of a gate voltage a single targeted QD and each barrier gate only one intended to define charge number, and multiple gate voltages tunnel barrier. Due to the tight proximity, however, to specify tunnel coupling between QDs for two-qubit each gate capacitively couples to nearby potential gates or to reservoirs for reset and measurement.