Control the qubit-qubit coupling with double superconducting resonators
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arXiv
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| Format: | Preprint |
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2026
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| author | Wang, Hui Wang, Rui Sugiyama, Daichi Shih, Chih-Yao Chen, Ching-Yeh Mukai, Hiroto Xue, Hang Tsai, J. S. |
| author_facet | Wang, Hui Wang, Rui Sugiyama, Daichi Shih, Chih-Yao Chen, Ching-Yeh Mukai, Hiroto Xue, Hang Tsai, J. S. |
| contents | We experimentally studied the switching off processes in the double-resonator coupler superconducting quantum circuit. In both frequency and time-domain, we observed the variation of qubit-qubit effective coupling by tuning the frequency differences between qubits and the double-resonator coupler. According to the measurement results, by just shifting about 50 MHz of qubits' frequencies, we can tune the effective qubit-qubit coupling strength from switching off point to two qubit gate point (effective coupling larger than 5 MHz) in double-resonator superconducting quantum circuit.The double-resonator (coupler) superconducting quantum circuit has the advantage of simple fabrications, introducing less flux noises, reducing occupancy of dilution refrigerator cables,which might supply a promising platform for future large-scale superconducting quantum processors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_11576 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Control the qubit-qubit coupling with double superconducting resonators Wang, Hui Wang, Rui Sugiyama, Daichi Shih, Chih-Yao Chen, Ching-Yeh Mukai, Hiroto Xue, Hang Tsai, J. S. Quantum Physics We experimentally studied the switching off processes in the double-resonator coupler superconducting quantum circuit. In both frequency and time-domain, we observed the variation of qubit-qubit effective coupling by tuning the frequency differences between qubits and the double-resonator coupler. According to the measurement results, by just shifting about 50 MHz of qubits' frequencies, we can tune the effective qubit-qubit coupling strength from switching off point to two qubit gate point (effective coupling larger than 5 MHz) in double-resonator superconducting quantum circuit.The double-resonator (coupler) superconducting quantum circuit has the advantage of simple fabrications, introducing less flux noises, reducing occupancy of dilution refrigerator cables,which might supply a promising platform for future large-scale superconducting quantum processors. |
| title | Control the qubit-qubit coupling with double superconducting resonators |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2602.11576 |