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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.09598 |
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| _version_ | 1866915386488782848 |
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| author | Amaha, Shinichi Hatano, Tsuyoshi Nakajima, Takashi Tarucha, Seigo |
| author_facet | Amaha, Shinichi Hatano, Tsuyoshi Nakajima, Takashi Tarucha, Seigo |
| contents | We report charge transport measurements in a ring-shaped quadruple quantum dot system, composed of two vertically coupled double quantum dots connected in parallel. The vertical coupling introduces an isospin degree of freedom tied to the layer index, and the parallel configuration enables independent access to each quantum dot pair. This design allows us to observe Coulomb diamonds and evaluate the interlayer energy offset. By extending this platform to triangular and hexagonal artificial lattices, we explore correlation effects such as isospin frustration. These results highlight the system's potential for studying interaction-driven quantum phases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_09598 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Vertically Coupled Double Quantum Dots Connected In Parallel Amaha, Shinichi Hatano, Tsuyoshi Nakajima, Takashi Tarucha, Seigo Mesoscale and Nanoscale Physics We report charge transport measurements in a ring-shaped quadruple quantum dot system, composed of two vertically coupled double quantum dots connected in parallel. The vertical coupling introduces an isospin degree of freedom tied to the layer index, and the parallel configuration enables independent access to each quantum dot pair. This design allows us to observe Coulomb diamonds and evaluate the interlayer energy offset. By extending this platform to triangular and hexagonal artificial lattices, we explore correlation effects such as isospin frustration. These results highlight the system's potential for studying interaction-driven quantum phases. |
| title | Vertically Coupled Double Quantum Dots Connected In Parallel |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.09598 |