论文标题
使用单线旋转QPIT量子的机上检测几个电子
In-flight detection of few electrons using a singlet-triplet spin qubit
论文作者
论文摘要
我们通过实验研究了两个电子单线旋转值和在量子厅边缘通道中传播的飞行电子之间的电容耦合。校准自旋量子探测器后，我们评估了其电荷敏感性，并通过平均测量的实验证明了少于五个飞行电子的检测。该实验表明，自旋量子置量值是一种超敏感和快速的电荷检测器，可以观察到将来的单个飞行电子单次检测。这项工作打开了半导体电路中单电子水平的量子电子光学实验的途径。
We investigate experimentally the capacitive coupling between a two-electron singlet-triplet spin qubit and flying electrons propagating in quantum Hall edge channels. After calibration of the spin qubit detector, we assess its charge sensibility and demonstrate experimentally the detection of less than five flying electrons with average measurement. This experiment demonstrates that the spin qubit is an ultrasensitive and fast charge detector with the perspective of a future single shot-detection of a single flying electron. This work opens the route toward quantum electron optics experiments at the single electron level in semiconductor circuits.
