Fast Reset Protocol for Superconducting Transmon Qubits
For larger-scale quantum information processing, qubit reset plays an important role, as the coherent times for qubits are limited. However, previous schemes require either long reset times or a complex pulse calibration technique, leading to low efficiency in qubit reset. Here, we propose a fast an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/2/817 |
| _version_ | 1797446728110047232 |
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| author | Wei-Ping Yuan Zhi-Cheng He Sai Li Zheng-Yuan Xue |
| author_facet | Wei-Ping Yuan Zhi-Cheng He Sai Li Zheng-Yuan Xue |
| author_sort | Wei-Ping Yuan |
| collection | DOAJ |
| description | For larger-scale quantum information processing, qubit reset plays an important role, as the coherent times for qubits are limited. However, previous schemes require either long reset times or a complex pulse calibration technique, leading to low efficiency in qubit reset. Here, we propose a fast and simple reset protocol for superconducting transmon qubits based on the coupler-coupled qubits architecture. In this setup, a mixing pulse is used to transfer the qubit excitation to the combined excitation of a low-qulity coupler and readout resonator, which will quickly decay to their respectively ground states, leading to efficient qubit reset to the ground state. Our numerical results show that the residual population of the qubit’s excited state can be suppressed to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.04</mn></mrow></semantics></math></inline-formula>% within 28 ns; the reset time will be 283 ns if photon depletion of the readout resonator is required. Thus, our protocol provides a promising way for the high-efficiency superconducting qubit reset. |
| first_indexed | 2024-03-09T13:45:42Z |
| format | Article |
| id | doaj.art-eac671b297b74efab59fde7ecb54ed80 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T13:45:42Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-eac671b297b74efab59fde7ecb54ed802023-11-30T21:01:53ZengMDPI AGApplied Sciences2076-34172023-01-0113281710.3390/app13020817Fast Reset Protocol for Superconducting Transmon QubitsWei-Ping Yuan0Zhi-Cheng He1Sai Li2Zheng-Yuan Xue3Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, ChinaFor larger-scale quantum information processing, qubit reset plays an important role, as the coherent times for qubits are limited. However, previous schemes require either long reset times or a complex pulse calibration technique, leading to low efficiency in qubit reset. Here, we propose a fast and simple reset protocol for superconducting transmon qubits based on the coupler-coupled qubits architecture. In this setup, a mixing pulse is used to transfer the qubit excitation to the combined excitation of a low-qulity coupler and readout resonator, which will quickly decay to their respectively ground states, leading to efficient qubit reset to the ground state. Our numerical results show that the residual population of the qubit’s excited state can be suppressed to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.04</mn></mrow></semantics></math></inline-formula>% within 28 ns; the reset time will be 283 ns if photon depletion of the readout resonator is required. Thus, our protocol provides a promising way for the high-efficiency superconducting qubit reset.https://www.mdpi.com/2076-3417/13/2/817qubit resettransmon qubithigh efficiency |
| spellingShingle | Wei-Ping Yuan Zhi-Cheng He Sai Li Zheng-Yuan Xue Fast Reset Protocol for Superconducting Transmon Qubits Applied Sciences qubit reset transmon qubit high efficiency |
| title | Fast Reset Protocol for Superconducting Transmon Qubits |
| title_full | Fast Reset Protocol for Superconducting Transmon Qubits |
| title_fullStr | Fast Reset Protocol for Superconducting Transmon Qubits |
| title_full_unstemmed | Fast Reset Protocol for Superconducting Transmon Qubits |
| title_short | Fast Reset Protocol for Superconducting Transmon Qubits |
| title_sort | fast reset protocol for superconducting transmon qubits |
| topic | qubit reset transmon qubit high efficiency |
| url | https://www.mdpi.com/2076-3417/13/2/817 |
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