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

被引:0
|
作者
Guo, Yu [1 ]
Ma, Songshan [2 ]
Shu, Chuan-Cun [2 ]
机构
[1] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Hunan Prov Key Lab Flexible Elect Mat Genome Engn, Changsha 410114, Peoples R China
[2] Cent South Univ, Sch Phys, Hunan Key Lab Nanophoton & Devices, Changsha 410083, Peoples R China
关键词
population transfer; quantum optimal control theory; quantum-dot molecules; 42.50.-p; 42.50.Dv; 73.63.Kv; STATES;
D O I
10.1088/1674-1056/ad0627
中图分类号
O4 [物理学];
学科分类号
0702 ;
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.
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页数:7
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