Reconfigurable photothermal doping filament for selective spin manipulation and addressing
The room temperature manipulation of solid-state spins provides an opportunity to develop quantum applications under ambient conditions. Local electromagnetic fields, that usually produced by current in micro/nanoscale metal wires, have been employed for the coherent driving and addressing of spin qubit. However, the fixed distribution limits the spatial selectivity and efficiency of qubit manipulation, which is of central importance in a scaled-up quantum system. Here, we report a solution by demonstrating a reconfigurable current with arbitrary shape to engineer microwave and DC magnetic field at microscale. A "photothermal doping" method was proposed to optically control local insulator-to-metal transition in vanadium dioxide. It generates a conducting filament with adjustable position, direction, and width. Universal manipulation and selective addressing of spins at arbitrary sites are realized, by freely changing the filament and electromagnetic field on demand. Our work paves the way for developing quantum devices with large-scale spin qubits.
Authors
- Zhe Bai (ORCID: https://orcid.org/0000-0002-3092-0903)
- Fang‐Wen Sun (ORCID: https://orcid.org/0000-0002-9625-7390)
- Mengqi Ma (ORCID: https://orcid.org/0000-0001-7345-575X)
- Guang‐Can Guo (ORCID: https://orcid.org/0000-0003-3771-9185)
- Wang Jiang (ORCID: https://orcid.org/0009-0003-0177-5051)
- Dong Yang (ORCID: https://orcid.org/0000-0003-1068-5085)
- Han‐Xiang Zang
- Chongwen Zou (ORCID: https://orcid.org/0000-0002-6153-081X)
- Liang Li (ORCID: https://orcid.org/0000-0001-5262-4593)
- Xiang-Dong Chen
- Shao-Chun Zhang
- Bowen Sun (ORCID: https://orcid.org/0000-0001-8255-3917)
- Zhi-Wei Liu (ORCID: https://orcid.org/0009-0001-1704-3950)
Institutions
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- Hefei University (CN)
- National Synchrotron Radiation Laboratory (CN)
- Beijing Academy of Quantum Information Sciences (CN)
- Heinz Optical Engineering (United States) (US)
Publication Details
- Journal
- Proceedings of the National Academy of Sciences
- Published
- 2025-08-29
- DOI
- https://doi.org/10.1073/pnas.2507587122
- Citations
- 1
- Primary Topic
- Electronic and Structural Properties of Oxides
- Type
- article
- Field-Weighted Citation Impact
- 0.52
Funders
- National Natural Science Foundation of China
- Anhui Provincial Key Research and Development Plan