Collective Dynamics in Circuit Quantum Acoustodynamics with a Macroscopic Resonator
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866912977365499904 |
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| author | Zhang, Libo Liu, Chilong Xie, Guixu Yuan, Haolan Liu, Mingze Jia, Hao Li, Jian Hu, Chang-Kang Liu, Song Santos, Alan C. Tan, Dian Yu, Dapeng |
| author_facet | Zhang, Libo Liu, Chilong Xie, Guixu Yuan, Haolan Liu, Mingze Jia, Hao Li, Jian Hu, Chang-Kang Liu, Song Santos, Alan C. Tan, Dian Yu, Dapeng |
| contents | Collective dynamics in engineered quantum systems offer a unique and versatile platform for exploring how many-body correlations bridge microscopic entanglement and macroscopic behavior. In this work, we report collective Dicke dynamics of acoustic modes in a macroscopic high-overtone bulk acoustic resonator (HBAR). To achieve this, we engineer a hybrid quantum acoustodynamic system comprising an HBAR strongly coupled to a superconducting transmon qubit. The HBAR device is distinctive in the sense that its narrow mode spacing, together with enhanced qubit-mode coupling strength, gives rise to efficient coupling between the transmon and clusters of near-resonant modes. By harnessing the system properties, we observe collective dynamics involving clusters composed by two or three mechanical modes, where their non-resonant spectrum allows for the observation of the transition between the Dicke static regime to dynamically induced timed-Dicke one. The coherent collective behavior of the system is supported by time-domain measurements of the qubit's purity, indicating the quantum nature of the collective dynamics. Overall, our work establishes HBAR-based hybrid quantum system as a promising platform for exploring many-body collective dynamics in macroscopic mechanical systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_20800 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Collective Dynamics in Circuit Quantum Acoustodynamics with a Macroscopic Resonator Zhang, Libo Liu, Chilong Xie, Guixu Yuan, Haolan Liu, Mingze Jia, Hao Li, Jian Hu, Chang-Kang Liu, Song Santos, Alan C. Tan, Dian Yu, Dapeng Quantum Physics Collective dynamics in engineered quantum systems offer a unique and versatile platform for exploring how many-body correlations bridge microscopic entanglement and macroscopic behavior. In this work, we report collective Dicke dynamics of acoustic modes in a macroscopic high-overtone bulk acoustic resonator (HBAR). To achieve this, we engineer a hybrid quantum acoustodynamic system comprising an HBAR strongly coupled to a superconducting transmon qubit. The HBAR device is distinctive in the sense that its narrow mode spacing, together with enhanced qubit-mode coupling strength, gives rise to efficient coupling between the transmon and clusters of near-resonant modes. By harnessing the system properties, we observe collective dynamics involving clusters composed by two or three mechanical modes, where their non-resonant spectrum allows for the observation of the transition between the Dicke static regime to dynamically induced timed-Dicke one. The coherent collective behavior of the system is supported by time-domain measurements of the qubit's purity, indicating the quantum nature of the collective dynamics. Overall, our work establishes HBAR-based hybrid quantum system as a promising platform for exploring many-body collective dynamics in macroscopic mechanical systems. |
| title | Collective Dynamics in Circuit Quantum Acoustodynamics with a Macroscopic Resonator |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2603.20800 |