Department of Physics, Princeton University, Princeton, New Jersey 08544, USA.
Faculdade de Ciências Aplicadas, Universidade Estadual de Campinas, 13484-350 Limeira, São Paulo, Brazil.
Phys Rev Lett. 2014 Jun 6;112(22):227601. doi: 10.1103/PhysRevLett.112.227601.
We report the observation of multiple harmonic generation in electric dipole spin resonance in an InAs nanowire double quantum dot. The harmonics display a remarkable detuning dependence: near the interdot charge transition as many as eight harmonics are observed, while at large detunings we only observe the fundamental spin resonance condition. The detuning dependence indicates that the observed harmonics may be due to Landau-Zener transition dynamics at anticrossings in the energy level spectrum.
我们报告了在 InAs 纳米线双量子点中的电偶极自旋共振中观察到的多次谐波产生。谐波显示出显著的失谐依赖关系：在两个点之间的电荷跃迁附近，观察到多达八个谐波，而在较大的失谐时，我们只观察到基本的自旋共振条件。失谐依赖关系表明，观察到的谐波可能是由于在能级谱中的交叉点处的 Landau-Zener 跃迁动力学引起的。
