Journal Article FZJ-2025-03407

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Automated Charge Transition Detection in Quantum Dot Charge Stability Diagrams

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2025
IEEE New York, NY

IEEE transactions on quantum engineering 6, 5500414 () [10.1109/TQE.2025.3596392]

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Abstract: Gate-defined semiconductor quantum dots require an appropriate number of electrons to function as qubits. The number of electrons is usually tuned by analyzing charge stability diagrams, in which charge transitions manifest as edges. Therefore, to fully automate qubit tuning, it is necessary to recognize these edges automatically and reliably. This article investigates possible detection methods, describes their training with simulated data from the SimCATS framework, and performs a quantitative comparison with a future hardware implementation in mind. Furthermore, we investigated the quality of the optimized approaches on experimentally measured data from a GaAs and a SiGe qubit sample.

Classification:

Contributing Institute(s):
  1. Integrated Computing Architectures (PGI-4)
Research Program(s):
  1. 5223 - Quantum-Computer Control Systems and Cryoelectronics (POF4-522) (POF4-522)

Appears in the scientific report 2025
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 Record created 2025-08-06, last modified 2025-09-30


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