Multimode RF Reflectometry for Spin Qubit Readout and Device Characterization
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866911302269534208 |
|---|---|
| author | Rivard, Joffrey Morel, Alexis Romain, Olivier Ndiaye, El Bachir Aboubakari, Idris Lupien, Christian Godfrin, Clément Jussot, Julien Kubicek, Stefan De Greve, Kristiaan Wan, Danny Rohrbacher, Claude Dupont-Ferrier, Eva |
| author_facet | Rivard, Joffrey Morel, Alexis Romain, Olivier Ndiaye, El Bachir Aboubakari, Idris Lupien, Christian Godfrin, Clément Jussot, Julien Kubicek, Stefan De Greve, Kristiaan Wan, Danny Rohrbacher, Claude Dupont-Ferrier, Eva |
| contents | We introduce a multimode superconducting inductor architecture that enables radio-frequency reflectometry at multiple discrete frequencies up to 2 GHz, addressing limitations of conventional single-mode designs. The spiral inductor's distributed inter-turn capacitance yields distinct resonant modes with varied impedance-matching conditions. By probing a quantum dot across several modes, we extract tunneling rates over a broad frequency range and identify signatures of nearby charge defects. Using one of the higher-order modes, we demonstrate single-shot spin readout via a radio-frequency single-electron transistor (RF-SET), achieving singlet-triplet readout with an integration time of 8 us and a readout fidelity of 98%. These results establish multimode inductance as a scalable and flexible component for fast spin-qubit readout and device-quality characterization. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_05087 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multimode RF Reflectometry for Spin Qubit Readout and Device Characterization Rivard, Joffrey Morel, Alexis Romain, Olivier Ndiaye, El Bachir Aboubakari, Idris Lupien, Christian Godfrin, Clément Jussot, Julien Kubicek, Stefan De Greve, Kristiaan Wan, Danny Rohrbacher, Claude Dupont-Ferrier, Eva Mesoscale and Nanoscale Physics Quantum Physics We introduce a multimode superconducting inductor architecture that enables radio-frequency reflectometry at multiple discrete frequencies up to 2 GHz, addressing limitations of conventional single-mode designs. The spiral inductor's distributed inter-turn capacitance yields distinct resonant modes with varied impedance-matching conditions. By probing a quantum dot across several modes, we extract tunneling rates over a broad frequency range and identify signatures of nearby charge defects. Using one of the higher-order modes, we demonstrate single-shot spin readout via a radio-frequency single-electron transistor (RF-SET), achieving singlet-triplet readout with an integration time of 8 us and a readout fidelity of 98%. These results establish multimode inductance as a scalable and flexible component for fast spin-qubit readout and device-quality characterization. |
| title | Multimode RF Reflectometry for Spin Qubit Readout and Device Characterization |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2512.05087 |