论文标题
登机式式式摩托式摩托车耦合在锗孔中双量子点
Gate-Tunable Spin-Orbit Coupling in a Germanium Hole Double Quantum Dot
论文作者
论文摘要
限制在半导体量子点系统中的孔旋转对它们的强旋轨相互作用（SOI）和相对较弱的超精细相互作用引起了极大的兴趣。在这里，我们在实验中证明了在锗（GE）Hut线（HW）中的双量子点中的可调SOI，这可以帮助实现快速的全电动旋转操作，同时抑制不需要的折叠。具体而言，我们在双量子点设备中测量了Pauli自旋封锁状态中的传输光谱。通过调整插点隧道耦合，我们获得了电场调谐的自旋轨道长度LSO = 2.0-48.9 nm。 SOI的这种可调节性可以为在GE HW系统中实现高保真量子的实现铺平道路。
Hole spins confined in semiconductor quantum dot systems have gained considerable interest for their strong spin-orbit interactions (SOIs) and relatively weak hyperfine interactions. Here we experimentally demonstrate a tunable SOI in a double quantum dot in a Germanium (Ge) hut wire (HW), which could help enable fast all-electric spin manipulations while suppressing unwanted decoherence. Specifically, we measure the transport spectra in the Pauli spin blockade regime in the double quantum dot device.By adjusting the interdot tunnel coupling, we obtain an electric field tuned spin-orbit length lso = 2.0 - 48.9 nm. This tunability of the SOI could pave the way toward the realization of high-fidelity qubits in Ge HW systems.
