论文标题
GAAS量子点中的各向同性和各向异性G因子校正
Isotropic and Anisotropic g-factor Corrections in GaAs Quantum Dots
论文作者
论文摘要
我们通过实验确定侧GAAS单电子量子点中的各向同性和各向异性G因子校正。我们通过将隧道速率测量到具有各种强度和方向的平面磁场的空内磁场的单个自旋状态中提取Zeeman分裂。我们量化了Zeeman能量，并找到对磁场强度的线性依赖性，这使我们能够提取G因子。根据自旋轨道相互作用诱导的各向同性和各向异性校正，对GAAS大量G-factor进行了各向异性校正，可以理解测得的G因子。因为这意味着自旋分裂在磁场方向上的依赖性，所以这些发现对于GAAS量子点中的自旋Qubits具有重要意义。
We experimentally determine isotropic and anisotropic g-factor corrections in lateral GaAs single-electron quantum dots. We extract the Zeeman splitting by measuring the tunnel rates into the individual spin states of an empty quantum dot for an in-plane magnetic field with various strengths and directions. We quantify the Zeeman energy and find a linear dependence on the magnetic field strength which allows us to extract the g-factor. The measured g-factor is understood in terms of spin-orbit interaction induced isotropic and anisotropic corrections to the GaAs bulk g-factor. Because this implies a dependence of the spin splitting on the magnetic field direction, these findings are of significance for spin qubits in GaAs quantum dots.
