中国物理B ›› 2019, Vol. 28 ›› Issue (9): 98505-098505.doi: 10.1088/1674-1056/ab37f9

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Manipulation of superconducting qubit with direct digital synthesis

Zhi-Yuan Li(李志远), Hai-Feng Yu(于海峰), Xin-Sheng Tan(谭新生), Shi-Ping Zhao(赵士平), Yang Yu(于扬)   

  1. 1 National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2019-04-11 修回日期:2019-07-09 出版日期:2019-09-05 发布日期:2019-09-05
  • 通讯作者: Hai-Feng Yu, Hai-Feng Yu E-mail:hfyu@nju.edu.cn;meisen0103@163.com
  • 基金资助:

    We thank Tektronix Co. Ltd. for technical help during the experiment. Project was supported by the National Natural Science Foundation of China (Grant No. 11890704), the National Key Research and Development Program of China (Grant No. 2016YFA0301802), the National Basic Research Program of China (Grant Nos. 2015CB921104 and 2016YFA0300601), and the Key R&D Program of Guangdong Province, China (Grant No. 2018B0303326001).

Manipulation of superconducting qubit with direct digital synthesis

Zhi-Yuan Li(李志远)1,2, Hai-Feng Yu(于海峰)1, Xin-Sheng Tan(谭新生)1, Shi-Ping Zhao(赵士平)2,3, Yang Yu(于扬)1   

  1. 1 National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China;
    2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-04-11 Revised:2019-07-09 Online:2019-09-05 Published:2019-09-05
  • Contact: Hai-Feng Yu, Hai-Feng Yu E-mail:hfyu@nju.edu.cn;meisen0103@163.com
  • Supported by:

    We thank Tektronix Co. Ltd. for technical help during the experiment. Project was supported by the National Natural Science Foundation of China (Grant No. 11890704), the National Key Research and Development Program of China (Grant No. 2016YFA0301802), the National Basic Research Program of China (Grant Nos. 2015CB921104 and 2016YFA0300601), and the Key R&D Program of Guangdong Province, China (Grant No. 2018B0303326001).

摘要:

We investigate the XY control and manipulation of the superconducting qubit state using direct digital synthesis (DDS) for the microwave pulse signal generation. The decoherence time, gate fidelity, and other qubit properties are measured and carefully characterized, and compared with the results obtained by using the traditional mixing technique for the microwave pulse generation. In particular, the qubit performance in the state manipulation with respect to the sampling rate of DDS is studied. Our results demonstrate that the present technique provides a simple and effective method for the XY control and manipulation of the superconducting qubit state. Realistic applications of the technique for the possible future scalable superconducting quantum computation are discussed.

关键词: superconducting qubit, direct digital synthesis, arbitrary waveform generator

Abstract:

We investigate the XY control and manipulation of the superconducting qubit state using direct digital synthesis (DDS) for the microwave pulse signal generation. The decoherence time, gate fidelity, and other qubit properties are measured and carefully characterized, and compared with the results obtained by using the traditional mixing technique for the microwave pulse generation. In particular, the qubit performance in the state manipulation with respect to the sampling rate of DDS is studied. Our results demonstrate that the present technique provides a simple and effective method for the XY control and manipulation of the superconducting qubit state. Realistic applications of the technique for the possible future scalable superconducting quantum computation are discussed.

Key words: superconducting qubit, direct digital synthesis, arbitrary waveform generator

中图分类号:  (Josephson devices)

  • 85.25.Cp
03.67.Lx (Quantum computation architectures and implementations)