Optimal and robust control of population transfer in asymmetric quantum-dot molecules

doi:10.1088/1674-1056/ad0627

中国物理B ›› 2024, Vol. 33 ›› Issue (2): 24203-024203.doi: 10.1088/1674-1056/ad0627

Optimal and robust control of population transfer in asymmetric quantum-dot molecules

Yu Guo(郭裕)¹, Songshan Ma(马松山)^2,†, and Chuan-Cun Shu(束传存)^2,‡

1 Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering, School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China;
2 Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China

收稿日期:2023-08-23 修回日期:2023-10-11 接受日期:2023-10-24 出版日期:2024-01-16 发布日期:2024-01-25
通讯作者: Songshan Ma, Chuan-Cun Shu E-mail:songshan@csu.edu.cn;cc.shu@csu.edu.cn
基金资助:
This work was supported by the National Natural Science Foundations of China (Grant Nos. 12275033, 61973317, and 12274470), the Natural Science Foundation of Hunan Province for Distinguished Young Scholars (Grant No. 2022JJ10070), the Natural Science Foundation of Hunan Province (Grant No. 2022JJ30582), and the Scientific Research Fund of Hunan Provincial Education Department (Grant No. 20A025).

Optimal and robust control of population transfer in asymmetric quantum-dot molecules

Yu Guo(郭裕)¹, Songshan Ma(马松山)^2,†, and Chuan-Cun Shu(束传存)^2,‡

1 Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering, School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China;
2 Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China

Received:2023-08-23 Revised:2023-10-11 Accepted:2023-10-24 Online:2024-01-16 Published:2024-01-25
Contact: Songshan Ma, Chuan-Cun Shu E-mail:songshan@csu.edu.cn;cc.shu@csu.edu.cn
Supported by:
This work was supported by the National Natural Science Foundations of China (Grant Nos. 12275033, 61973317, and 12274470), the Natural Science Foundation of Hunan Province for Distinguished Young Scholars (Grant No. 2022JJ10070), the Natural Science Foundation of Hunan Province (Grant No. 2022JJ30582), and the Scientific Research Fund of Hunan Provincial Education Department (Grant No. 20A025).

摘要/Abstract

摘要： We present an optimal and robust quantum control method for efficient population transfer in asymmetric double quantum-dot molecules. We derive a long-duration control scheme that allows for highly efficient population transfer by accurately controlling the amplitude of a narrow-bandwidth pulse. To overcome fluctuations in control field parameters, we employ a frequency-domain quantum optimal control theory method to optimize the spectral phase of a single pulse with broad bandwidth while preserving the spectral amplitude. It is shown that this spectral-phase-only optimization approach can successfully identify robust and optimal control fields, leading to efficient population transfer to the target state while concurrently suppressing population transfer to undesired states. The method demonstrates resilience to fluctuations in control field parameters, making it a promising approach for reliable and efficient population transfer in practical applications.

关键词: population transfer, quantum optimal control theory, quantum-dot molecules

Abstract: We present an optimal and robust quantum control method for efficient population transfer in asymmetric double quantum-dot molecules. We derive a long-duration control scheme that allows for highly efficient population transfer by accurately controlling the amplitude of a narrow-bandwidth pulse. To overcome fluctuations in control field parameters, we employ a frequency-domain quantum optimal control theory method to optimize the spectral phase of a single pulse with broad bandwidth while preserving the spectral amplitude. It is shown that this spectral-phase-only optimization approach can successfully identify robust and optimal control fields, leading to efficient population transfer to the target state while concurrently suppressing population transfer to undesired states. The method demonstrates resilience to fluctuations in control field parameters, making it a promising approach for reliable and efficient population transfer in practical applications.

Key words: population transfer, quantum optimal control theory, quantum-dot molecules

中图分类号: (Quantum optics)

42.50.-p

42.50.Dv (Quantum state engineering and measurements) 73.63.Kv (Quantum dots)

Yu Guo(郭裕), Songshan Ma(马松山), and Chuan-Cun Shu(束传存). Optimal and robust control of population transfer in asymmetric quantum-dot molecules[J]. 中国物理B, 2024, 33(2): 24203-024203.

Yu Guo(郭裕), Songshan Ma(马松山), and Chuan-Cun Shu(束传存). Optimal and robust control of population transfer in asymmetric quantum-dot molecules[J]. Chin. Phys. B, 2024, 33(2): 24203-024203.

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Optimal and robust control of population transfer in asymmetric quantum-dot molecules

Optimal and robust control of population transfer in asymmetric quantum-dot molecules

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