论文标题
孔在可调的GE Hut电线中旋转双量子点
Hole spin in tunable Ge hut wire double quantum dot
论文作者
论文摘要
锗（GE）中的孔表现出很强的自旋轨道相互作用，可以利用其用于快速和全电动的自旋态操作。在这里，我们报告了在可调的GE HUT线孔双量子点中进行的传输实验。我们观察到Pauli自旋封锁（PSB）的特征，其大型单线 - 三丝网能量分裂为〜1.1 MEV并提取G系数。通过分析PSB泄漏电流，我们获得了〜40-100 nm的自旋长度L_SO。此外，我们展示了电偶极旋转共振。这些结果为实现高质量可调孔旋转轨量子箱奠定了坚实的基础。
Holes in germanium (Ge) exhibit strong spin-orbit interaction, which can be exploited for fast and all-electrical manipulation of spin states. Here, we report transport experiments in a tunable Ge hut wire hole double quantum dot. We observe the signatures of Pauli spin blockade (PSB) with a large singlet-triplet energy splitting of ~1.1 meV and extract the g factor. By analyzing the the PSB leakage current, we obtain a spin-orbit length l_so of ~ 40-100 nm. Furthermore, we demonstrate the electric dipole spin resonance. These results lay a solid foundation for implementing high quality tunable hole spin-orbit qubits.
