Parametric phase modulation in superconducting circuits
Fuente:
arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909916549087232 |
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| author | Ma, Zhuang Li, Xianke Shi, Hongyi Guo, Ruonan Xu, Jianwen Tan, Xinsheng Yu, Yang |
| author_facet | Ma, Zhuang Li, Xianke Shi, Hongyi Guo, Ruonan Xu, Jianwen Tan, Xinsheng Yu, Yang |
| contents | Parametric modulation, valued for its versatility, is widely employed in superconducting circuits for quantum simulations and high-fidelity two-qubit gates. Conventionally, the qubit coupling strength is determined by the amplitude of the parametric flux pulse, which affects the qubit parameters dramatically. In this paper, we propose and implement a phase-modulation scheme to tune the interaction strength via adjustment of the relative phase between the parametric flux pulses applied to two coupled qubits. We characterize this modulation for sideband couplings, at both sweet and off-sweet spots, achieving a broad range of coupling strengths, as confirmed by both population dynamics and spectroscopy methods. This approach enables phase-controlled modulation of coupling strength, providing a promising candidate for parametrically driven quantum simulations and gate operations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20192 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Parametric phase modulation in superconducting circuits Ma, Zhuang Li, Xianke Shi, Hongyi Guo, Ruonan Xu, Jianwen Tan, Xinsheng Yu, Yang Quantum Physics Parametric modulation, valued for its versatility, is widely employed in superconducting circuits for quantum simulations and high-fidelity two-qubit gates. Conventionally, the qubit coupling strength is determined by the amplitude of the parametric flux pulse, which affects the qubit parameters dramatically. In this paper, we propose and implement a phase-modulation scheme to tune the interaction strength via adjustment of the relative phase between the parametric flux pulses applied to two coupled qubits. We characterize this modulation for sideband couplings, at both sweet and off-sweet spots, achieving a broad range of coupling strengths, as confirmed by both population dynamics and spectroscopy methods. This approach enables phase-controlled modulation of coupling strength, providing a promising candidate for parametrically driven quantum simulations and gate operations. |
| title | Parametric phase modulation in superconducting circuits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2510.20192 |