Phononic modulation of spin-lattice relaxation in molecular qubit frameworks
Abstract The solid-state integration of molecular electron spin qubits could promote the advancement of molecular quantum information science. With highly ordered structures and rational designability, microporous framework materials offer ideal matrices to host qubits. They exhibit tunable phonon d...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54989-2 |
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| author | Aimei Zhou Denan Li Mingshu Tan Yanpei Lv Simin Pang Xinxing Zhao Zhifu Shi Jun Zhang Feng Jin Shi Liu Lei Sun |
| author_facet | Aimei Zhou Denan Li Mingshu Tan Yanpei Lv Simin Pang Xinxing Zhao Zhifu Shi Jun Zhang Feng Jin Shi Liu Lei Sun |
| author_sort | Aimei Zhou |
| collection | DOAJ |
| description | Abstract The solid-state integration of molecular electron spin qubits could promote the advancement of molecular quantum information science. With highly ordered structures and rational designability, microporous framework materials offer ideal matrices to host qubits. They exhibit tunable phonon dispersion relations and spin distributions, enabling optimization of essential qubit properties including the spin-lattice relaxation time (T 1) and decoherence time. In this study, through spin dynamic and vibrational spectroscopic characterizations of two radical-embedded framework materials, we show that hydrogen-bonded networks give rise to a low Debye temperature of acoustic phonons and generates sub-terahertz optical phonons, both of which facilitate spin-lattice relaxation. Whereas deuterating hydrogen-bonded networks reduces both phonon frequencies and T 1, eliminating such flexible structural motifs raises phonon dispersions and improves the T 1 by one to two orders of magnitude. The phononic tunability of spin-lattice relaxation in molecular qubit frameworks would facilitate the development of solid-state qubits operating at elevated temperatures. |
| format | Article |
| id | doaj-art-4ddb33f8c0ff419881e28a8a1e4dc510 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-4ddb33f8c0ff419881e28a8a1e4dc5102025-01-05T12:36:00ZengNature PortfolioNature Communications2041-17232024-12-0115111010.1038/s41467-024-54989-2Phononic modulation of spin-lattice relaxation in molecular qubit frameworksAimei Zhou0Denan Li1Mingshu Tan2Yanpei Lv3Simin Pang4Xinxing Zhao5Zhifu Shi6Jun Zhang7Feng Jin8Shi Liu9Lei Sun10Department of Chemistry, Zhejiang UniversityDepartment of Physics, School of Science and Research Center for Industries of the Future, Westlake UniversityBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesState Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of SciencesState Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of SciencesCIQTEK Co., Ltd.CIQTEK Co., Ltd.State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesDepartment of Chemistry, School of Science and Research Center for Industries of the Future, Westlake UniversityDepartment of Chemistry, School of Science and Research Center for Industries of the Future, Westlake UniversityAbstract The solid-state integration of molecular electron spin qubits could promote the advancement of molecular quantum information science. With highly ordered structures and rational designability, microporous framework materials offer ideal matrices to host qubits. They exhibit tunable phonon dispersion relations and spin distributions, enabling optimization of essential qubit properties including the spin-lattice relaxation time (T 1) and decoherence time. In this study, through spin dynamic and vibrational spectroscopic characterizations of two radical-embedded framework materials, we show that hydrogen-bonded networks give rise to a low Debye temperature of acoustic phonons and generates sub-terahertz optical phonons, both of which facilitate spin-lattice relaxation. Whereas deuterating hydrogen-bonded networks reduces both phonon frequencies and T 1, eliminating such flexible structural motifs raises phonon dispersions and improves the T 1 by one to two orders of magnitude. The phononic tunability of spin-lattice relaxation in molecular qubit frameworks would facilitate the development of solid-state qubits operating at elevated temperatures.https://doi.org/10.1038/s41467-024-54989-2 |
| spellingShingle | Aimei Zhou Denan Li Mingshu Tan Yanpei Lv Simin Pang Xinxing Zhao Zhifu Shi Jun Zhang Feng Jin Shi Liu Lei Sun Phononic modulation of spin-lattice relaxation in molecular qubit frameworks Nature Communications |
| title | Phononic modulation of spin-lattice relaxation in molecular qubit frameworks |
| title_full | Phononic modulation of spin-lattice relaxation in molecular qubit frameworks |
| title_fullStr | Phononic modulation of spin-lattice relaxation in molecular qubit frameworks |
| title_full_unstemmed | Phononic modulation of spin-lattice relaxation in molecular qubit frameworks |
| title_short | Phononic modulation of spin-lattice relaxation in molecular qubit frameworks |
| title_sort | phononic modulation of spin lattice relaxation in molecular qubit frameworks |
| url | https://doi.org/10.1038/s41467-024-54989-2 |
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