Perfect displacement of a superconducting resonator via fast-forward scaling and its application to high-speed $R_{ZZ}$ gates in Kerr-cat qubits
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| Format: | Preprint |
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2025
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| _version_ | 1866908948557201408 |
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| author | Aoki, Takaaki Masuda, Shumpei |
| author_facet | Aoki, Takaaki Masuda, Shumpei |
| contents | We investigate the fast-forward and time-scaling properties of superconducting resonators under an off-resonant coherent drive. We propose a scheme for perfect displacement of a superconducting resonator by modulating the drive amplitude based on fast-forward scaling theory. Furthermore, we propose a scheme exploiting both the fast-forward and time-scaling properties that enables perfect displacement through detuning modulation. The proposed schemes are also applicable to a subsystem that can be effectively represented by a driven resonator. In particular, we apply the latter scheme to fast and high-fidelity displacement of a coupler between Kerr parametric oscillators, which leads to high-speed $R_{ZZ}$ gates in Kerr-cat qubits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_11056 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Perfect displacement of a superconducting resonator via fast-forward scaling and its application to high-speed $R_{ZZ}$ gates in Kerr-cat qubits Aoki, Takaaki Masuda, Shumpei Quantum Physics We investigate the fast-forward and time-scaling properties of superconducting resonators under an off-resonant coherent drive. We propose a scheme for perfect displacement of a superconducting resonator by modulating the drive amplitude based on fast-forward scaling theory. Furthermore, we propose a scheme exploiting both the fast-forward and time-scaling properties that enables perfect displacement through detuning modulation. The proposed schemes are also applicable to a subsystem that can be effectively represented by a driven resonator. In particular, we apply the latter scheme to fast and high-fidelity displacement of a coupler between Kerr parametric oscillators, which leads to high-speed $R_{ZZ}$ gates in Kerr-cat qubits. |
| title | Perfect displacement of a superconducting resonator via fast-forward scaling and its application to high-speed $R_{ZZ}$ gates in Kerr-cat qubits |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.11056 |