Reconfigurable photothermal doping filament for selective spin manipulation and addressing

• 成果类型: Article
• 署名作者: Liu, Zhi-Wei; Ma, Meng-Qi; Sun, Bo-Wen; Li, Liang; Jiang, Wang; Zang, Han-Xiang; Bai, Zhe; Dong, Yang; Zhang, Shao-Chun; Chen, Xiang-Dong; Zou, Chong-Wen; Guo, Guang-Can; Sun, Fang-Wen
• 署名单位: Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; CAS Center for Excellence in Quantum Information & Quantum Physics; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Hefei National Laboratory
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-9601
• DOI: 10.1073/pnas.2507587122
• 发表日期: 2025-09-02
• 关键词: vo2; TRANSITION; DYNAMICS; spectroscopy; RESOLUTION; nodes

摘要

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. by freely changing the filament and electromagnetic field on demand. Our work paves the way for developing quantum devices with large-scale spin qubits.