Towards a hybrid 3D transmon qubit with topological insulator-based Josephson junctions
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915354968588288 |
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| author | Huang, Sheng-Wen Suresh, Ramya Liao, Jian Du, Botao Miles, Zachary Rokhinson, Leonid P. Chen, Yong P. Ma, Ruichao |
| author_facet | Huang, Sheng-Wen Suresh, Ramya Liao, Jian Du, Botao Miles, Zachary Rokhinson, Leonid P. Chen, Yong P. Ma, Ruichao |
| contents | Superconducting quantum circuits provide a versatile platform for studying quantum materials by leveraging precise microwave control and utilizing the tools of circuit quantum electrodynamics (QED). Hybrid circuit devices incorporating novel quantum materials could also lead to new qubit functionalities, such as gate tunability and noise resilience. Here, we report experimental progress towards a transmon-like qubit made with a superconductor-topological insulator-superconductor (S-TI-S) Josephson junction using exfoliated BiSbTeSe2. We present a design that enables us to systematically characterize the hybrid device, from DC transport of the S-TI-S junction, to RF spectroscopy, to full circuit QED control and measurement of the hybrid qubit. In addition, we utilize a high-quality-factor superconducting cavity to characterize material and fabrication-induced losses, thereby guiding our efforts to improve device quality. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_18232 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Towards a hybrid 3D transmon qubit with topological insulator-based Josephson junctions Huang, Sheng-Wen Suresh, Ramya Liao, Jian Du, Botao Miles, Zachary Rokhinson, Leonid P. Chen, Yong P. Ma, Ruichao Mesoscale and Nanoscale Physics Quantum Physics Superconducting quantum circuits provide a versatile platform for studying quantum materials by leveraging precise microwave control and utilizing the tools of circuit quantum electrodynamics (QED). Hybrid circuit devices incorporating novel quantum materials could also lead to new qubit functionalities, such as gate tunability and noise resilience. Here, we report experimental progress towards a transmon-like qubit made with a superconductor-topological insulator-superconductor (S-TI-S) Josephson junction using exfoliated BiSbTeSe2. We present a design that enables us to systematically characterize the hybrid device, from DC transport of the S-TI-S junction, to RF spectroscopy, to full circuit QED control and measurement of the hybrid qubit. In addition, we utilize a high-quality-factor superconducting cavity to characterize material and fabrication-induced losses, thereby guiding our efforts to improve device quality. |
| title | Towards a hybrid 3D transmon qubit with topological insulator-based Josephson junctions |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2506.18232 |