Zubchenko, Anton and Middlebrooks, Danielle and Lausen, Lara and Kuemmeth, Ferdinand and Chatterjee, Anasua and Zwolak, Justyna P. (2025) Autonomous bootstrapping of quantum dot devices. PHYSICAL REVIEW APPLIED, 23 (1): 014072. ISSN 2331-7019,
Full text not available from this repository. (Request a copy)Abstract
Semiconductor quantum dots (QDs) are a promising platform for multiple different qubit implementations, all of which are voltage controlled by programmable gate electrodes. However, as the QD arrays grow in size and complexity, tuning procedures that can fully autonomously handle the increasing number of control parameters are becoming essential for enabling scalability. We propose a bootstrapping algorithm for initializing a depletion-mode QD device in preparation for subsequent phases of tuning. During bootstrapping, the QD device functionality is validated, all gates are characterized, and the QD charge sensor is made operational. We demonstrate the bootstrapping protocol in conjunction with a coarse-tuning module, showing that the combined algorithm can efficiently and reliably take a cooled-down QD device to a desired global-state configuration in under 8 min, with a success rate of 96%. Finally, by following heuristic approaches to QD device initialization and combining the efficient ray-based measurement with the rapid radio-frequency reflectometry measurements, the proposed algorithm establishes a reference in terms of performance, reliability, and efficiency against which alternative algorithms can be benchmarked.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PROCESSOR; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 May 2026 09:37 |
| Last Modified: | 18 May 2026 09:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/67506 |
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