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Complete population transfer between next-adjacent energy levels of a transmon qudit |
| Yingshan Zhang(张颖珊)1,†, Pei Liu(刘培)2,†, Jingning Zhang(张静宁)1, Ruixia Wang(王睿侠)1, Weiyang Liu(刘伟洋)1, Jiaxiu Han(韩佳秀)1,‡, Yirong Jin(金贻荣)1, and Haifeng Yu(于海峰)1 |
1 Beijing Academy of Quantum Information Sciences, Beijing 100193, China;
2 State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China |
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Abstract The utilization of qudits in quantum systems has led to significant advantages in quantum computation and information processing. Therefore, qudits have gained increased attention in recent research for their precise and efficient operations. In this work, we demonstrate the complete population transfer between the next-adjacent energy levels of a transmon qudit using the Pythagorean coupling method and energy level mapping. We achieve a |0> to |2> transfer with a process fidelity of 97.76% in the subspace spanned by |0> to |2>. Moreover, the transfer operation is achieved within a remarkably fast timescale, as short as 20 ns. This study may present a promising avenue for enhancing the operation flexibility and efficiency of qudits in future implementations.
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Received: 01 June 2023
Revised: 02 October 2023
Accepted manuscript online: 13 October 2023
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PACS:
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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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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.11890704, 12004042, 12104055, and 12104056), Natural Science Foundation of Beijing (Grant No.Z190012), and Key Area Research and Development Program of Guangdong Province (Grant No.2018B030326001). |
Corresponding Authors:
Jiaxiu Han
E-mail: hanjx@baqis.ac.cn
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Cite this article:
Yingshan Zhang(张颖珊), Pei Liu(刘培), Jingning Zhang(张静宁), Ruixia Wang(王睿侠), Weiyang Liu(刘伟洋), Jiaxiu Han(韩佳秀), Yirong Jin(金贻荣), and Haifeng Yu(于海峰) Complete population transfer between next-adjacent energy levels of a transmon qudit 2023 Chin. Phys. B 32 120306
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