Impact of electrostatic crosstalk on spin qubits in dense CMOS quantum dot arrays
The abundance of historical investment in the integrated circuit sector is playing a crucial role in the quantum era. Progress in semiconductor spin qubits recently enabled the incorporation of foundry-level fabrication techniques into quantum processors, paving the way for scalable and commercial quantum computing. However, current CMOS quantum processors, which use dense gate arrays to define quantum dots, are prone to electrostatic crosstalk due to capacitive coupling. This crosstalk, transferred through spin-orbit interactions, impacts the Larmor frequency of the spin qubits. Utilizing advanced simulation tools and measurements in several state-of-the-art CMOS quantum devices, the authors formulate here a framework illustrating how electric fields interact with electron spins in intricate arrays, offering vital insights for the development of this quantum technology.
Authors
- Kohei M. Itoh (ORCID: https://orcid.org/0000-0002-8153-4893)
- Arne Laucht (ORCID: https://orcid.org/0000-0001-7892-7963)
- Rajib Rahman (ORCID: https://orcid.org/0000-0003-1649-823X)
- Jesús D. Cifuentes (ORCID: https://orcid.org/0000-0003-2588-7683)
- Chih Hwan Yang (ORCID: https://orcid.org/0000-0002-8713-150X)
- Andrew S. Dzurak (ORCID: https://orcid.org/0000-0003-1389-5096)
- Ross C. C. Leon (ORCID: https://orcid.org/0000-0002-4765-2810)
- Wee Han Lim (ORCID: https://orcid.org/0000-0002-8821-2758)
- James Slack-Smith (ORCID: https://orcid.org/0000-0001-7026-5360)
- Fay E. Hudson (ORCID: https://orcid.org/0000-0003-0134-3657)
- Ensar Vahapoglu (ORCID: https://orcid.org/0000-0002-3047-8414)
- Ingvild Hansen (ORCID: https://orcid.org/0000-0001-9212-4040)
- Tuomo Tanttu (ORCID: https://orcid.org/0000-0002-2832-3237)
- Christopher C. Escott (ORCID: https://orcid.org/0000-0003-1458-2980)
- Nard Dumoulin Stuyck (ORCID: https://orcid.org/0000-0003-0731-7679)
- Will Gilbert (ORCID: https://orcid.org/0000-0001-7127-5982)
- M. L. W. Thewalt (ORCID: https://orcid.org/0000-0002-5806-0618)
- André Saraiva (ORCID: https://orcid.org/0000-0002-7209-9180)
- Jonathan Y. Huang (ORCID: https://orcid.org/0000-0002-1729-3052)
- Paul Steinacker (ORCID: https://orcid.org/0009-0000-6515-2513)
- N. V. Abrosimov (ORCID: https://orcid.org/0000-0002-2042-4754)
- Santiago Serrano (ORCID: https://orcid.org/0000-0002-3950-1174)
- Hans-Joachim Pohl
Institutions
- Simon Fraser University (CA)
- Keio University (JP)
- UNSW Sydney (AU)
- Leibniz Institute for Crystal Growth (DE)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2024-09-10
- DOI
- https://doi.org/10.1103/physrevb.110.125414
- Citations
- 7
- Primary Topic
- Quantum and electron transport phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.69
Funders
- Australian Research Council
- Army Research Office