Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons
Abstract Semiconductor quantum dots are an attractive platform for the realisation of quantum processors. To achieve long-range coupling between them, quantum dots have been integrated into microwave cavities. However, it has been shown that their coherence is then reduced compared to their cavity-f...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-60952-6 |
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| author | B. Neukelmance B. Hue Q. Schaeverbeke L. Jarjat A. Théry J. Craquelin W. Legrand T. Cubaynes G. Abulizi J. Becdelievre M. El Abbassi A. Larrouy K. F. Ourak D. Stefani J. A. Sulpizio A. Cottet M. M. Desjardins T. Kontos M. R. Delbecq |
| author_facet | B. Neukelmance B. Hue Q. Schaeverbeke L. Jarjat A. Théry J. Craquelin W. Legrand T. Cubaynes G. Abulizi J. Becdelievre M. El Abbassi A. Larrouy K. F. Ourak D. Stefani J. A. Sulpizio A. Cottet M. M. Desjardins T. Kontos M. R. Delbecq |
| author_sort | B. Neukelmance |
| collection | DOAJ |
| description | Abstract Semiconductor quantum dots are an attractive platform for the realisation of quantum processors. To achieve long-range coupling between them, quantum dots have been integrated into microwave cavities. However, it has been shown that their coherence is then reduced compared to their cavity-free implementations. Here, we manipulate the quantum states of a suspended carbon nanotube double quantum dot with ferromagnetic contacts embedded in a microwave cavity. By performing quantum manipulations via the cavity photons, we demonstrate coherence times of the order of 1.3 μs, two orders of magnitude larger than those measured so far in any carbon quantum circuit and one order of magnitude larger than silicon-based quantum dots in comparable environment. This holds promise for carbon as a host material for spin qubits in circuit quantum electrodynamics. |
| format | Article |
| id | doaj-art-ec7f51669ef84fe7ba7ca24a26a0707c |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-ec7f51669ef84fe7ba7ca24a26a0707c2025-08-20T03:37:37ZengNature PortfolioNature Communications2041-17232025-07-011611710.1038/s41467-025-60952-6Microsecond-lived quantum states in a carbon-based circuit driven by cavity photonsB. Neukelmance0B. Hue1Q. Schaeverbeke2L. Jarjat3A. Théry4J. Craquelin5W. Legrand6T. Cubaynes7G. Abulizi8J. Becdelievre9M. El Abbassi10A. Larrouy11K. F. Ourak12D. Stefani13J. A. Sulpizio14A. Cottet15M. M. Desjardins16T. Kontos17M. R. Delbecq18Laboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéC12 Quantum ElectronicsLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéC12 Quantum ElectronicsC12 Quantum ElectronicsC12 Quantum ElectronicsC12 Quantum ElectronicsC12 Quantum ElectronicsC12 Quantum ElectronicsC12 Quantum ElectronicsLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéC12 Quantum ElectronicsLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéLaboratoire de Physique de l’École normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris CitéAbstract Semiconductor quantum dots are an attractive platform for the realisation of quantum processors. To achieve long-range coupling between them, quantum dots have been integrated into microwave cavities. However, it has been shown that their coherence is then reduced compared to their cavity-free implementations. Here, we manipulate the quantum states of a suspended carbon nanotube double quantum dot with ferromagnetic contacts embedded in a microwave cavity. By performing quantum manipulations via the cavity photons, we demonstrate coherence times of the order of 1.3 μs, two orders of magnitude larger than those measured so far in any carbon quantum circuit and one order of magnitude larger than silicon-based quantum dots in comparable environment. This holds promise for carbon as a host material for spin qubits in circuit quantum electrodynamics.https://doi.org/10.1038/s41467-025-60952-6 |
| spellingShingle | B. Neukelmance B. Hue Q. Schaeverbeke L. Jarjat A. Théry J. Craquelin W. Legrand T. Cubaynes G. Abulizi J. Becdelievre M. El Abbassi A. Larrouy K. F. Ourak D. Stefani J. A. Sulpizio A. Cottet M. M. Desjardins T. Kontos M. R. Delbecq Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons Nature Communications |
| title | Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons |
| title_full | Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons |
| title_fullStr | Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons |
| title_full_unstemmed | Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons |
| title_short | Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons |
| title_sort | microsecond lived quantum states in a carbon based circuit driven by cavity photons |
| url | https://doi.org/10.1038/s41467-025-60952-6 |
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