RFSoC-based radio-frequency reflectometry in gate-defined bilayer graphene quantum devices
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866913939519963136 |
|---|---|
| author | Shinozaki, Motoya Johmen, Tomoya Hosaka, Aruto Seo, Takumi Yashima, Shunsuke Shirachi, Akitomi Noro, Kosuke Sato, Shoichi Kumasaka, Takashi Yoshida, Tsuyoshi Otsuka, Tomohiro |
| author_facet | Shinozaki, Motoya Johmen, Tomoya Hosaka, Aruto Seo, Takumi Yashima, Shunsuke Shirachi, Akitomi Noro, Kosuke Sato, Shoichi Kumasaka, Takashi Yoshida, Tsuyoshi Otsuka, Tomohiro |
| contents | Quantum computers require both scalability and high performance for practical applications. While semiconductor quantum dots are promising candidates for quantum bits, the complexity of measurement setups poses an important challenge for scaling up these devices. Here, radio-frequency system-on-chip (RFSoC) technology is exepcted for a promising approach that combines scalability with flexibility. In this paper, we demonstrate RF reflectometry in gate-defined bilayer graphene quantum devices using RFSoC-based measurement architecture. By controlling the confinement strength through gate voltages, we achieve both Fabry-Pérot interferometer and quantum dot operations in a single device. Although impedance matching conditions currently limit the measurement sensitivity, we identify pathways for optimization through tunnel barrier engineering and resonator design. These results represent a step toward integrating high-bandwidth measurements with scalable quantum devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_15239 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | RFSoC-based radio-frequency reflectometry in gate-defined bilayer graphene quantum devices Shinozaki, Motoya Johmen, Tomoya Hosaka, Aruto Seo, Takumi Yashima, Shunsuke Shirachi, Akitomi Noro, Kosuke Sato, Shoichi Kumasaka, Takashi Yoshida, Tsuyoshi Otsuka, Tomohiro Mesoscale and Nanoscale Physics Quantum computers require both scalability and high performance for practical applications. While semiconductor quantum dots are promising candidates for quantum bits, the complexity of measurement setups poses an important challenge for scaling up these devices. Here, radio-frequency system-on-chip (RFSoC) technology is exepcted for a promising approach that combines scalability with flexibility. In this paper, we demonstrate RF reflectometry in gate-defined bilayer graphene quantum devices using RFSoC-based measurement architecture. By controlling the confinement strength through gate voltages, we achieve both Fabry-Pérot interferometer and quantum dot operations in a single device. Although impedance matching conditions currently limit the measurement sensitivity, we identify pathways for optimization through tunnel barrier engineering and resonator design. These results represent a step toward integrating high-bandwidth measurements with scalable quantum devices. |
| title | RFSoC-based radio-frequency reflectometry in gate-defined bilayer graphene quantum devices |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2502.15239 |