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Multi-Mode Bus Coupling Architecture of Superconducting Quantum Processor |
| Changhao Zhao1,2, Yongcheng He1,2, Xiao Geng1,2, Kaiyong He1,2, Genting Dai1,2, Jianshe Liu1,2, and Wei Chen1,2,3* |
1Laboratory of Superconducting Quantum Information Processing, School of Integrated Circuits, Tsinghua University, Beijing 100084, China
2Beijing National Research Center for Information Science and Technology, Beijing 100084, China
3Beijing Innovation Center for Future Chips, Tsinghua University, Beijing 100084, China
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| Cite this article: |
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Changhao Zhao, Yongcheng He, Xiao Geng et al 2023 Chin. Phys. Lett. 40 010301 |
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Abstract Resonators in circuit quantum electrodynamics systems naturally carry multiple modes, which may have non-negligible influence on qubit parameters and device performance. While new theories and techniques are under investigation to deal with the multi-mode effects in circuit quantum electrodynamics systems, researchers have proposed novel engineering designs featuring multi-mode resonators to achieve enhanced functionalities of superconducting quantum processors. Here, we propose multi-mode bus coupling architecture, in which superconducting qubits are coupled to multiple bus resonators to gain larger coupling strength. Applications of multi-mode bus couplers can be helpful for improving iSWAP gate fidelity and gate speed beyond the limit of single-mode scenario. The proposed multi-mode bus coupling architecture is compatible with a scalable variation of the traditional bus coupling architecture. It opens up new possibilities for realization of scalable superconducting quantum computation with circuit quantum electrodynamics systems.
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Received: 22 July 2022
Published: 24 December 2022
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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03.67.-a
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(Quantum information)
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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03.67.Pp
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(Quantum error correction and other methods for protection against decoherence)
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