Formalism of rotating-wave approximation in high-spin system with quadrupole interaction

被引:0
|
作者
Ding, Wen-Kui [1 ,2 ,3 ,4 ]
Wang, Xiao-Guang [1 ,2 ,5 ]
机构
[1] Zhejiang Sci Tech Univ, Key Lab Opt Field Manipulat Zhejiang Prov, Hangzhou 310018, Peoples R China
[2] Zhejiang Sci Tech Univ, Dept Phys, Hangzhou 310018, Peoples R China
[3] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
[4] Zhejiang Univ, Dept Phys, Dept Phys, Hangzhou 310027, Peoples R China
[5] China Acad Engn Phys, Grad Sch, Beijing 100193, Peoples R China
基金
中国国家自然科学基金;
关键词
rotating wave approximation; quadrupole interaction; high-spin system; BOSE-EINSTEIN CONDENSATION; MAGNETIC-RESONANCE; QUANTUM;
D O I
10.1088/1674-1056/aca392
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate the rotating wave approximation applied in the high-spin quantum system driven by a linearly polarized alternating magnetic field in the presence of quadrupole interactions. The conventional way to apply the rotating wave approximation in a driven high-spin system is to assume the dynamics being restricted in the reduced Hilbert space. However, when the driving strength is relatively strong or the driving is off resonant, the leakage from the target resonance subspace cannot be neglected for a multi-level quantum system. We propose the correct formalism to apply the rotating wave approximation in the full Hilbert space by taking this leakage into account. By estimating the operator fidelity of the time propagator, our formalism applied in the full Hilbert space unambiguously manifests great advantages over the conventional method applied in the reduced Hilbert space.
引用
收藏
页数:7
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