论文标题
计数双层石墨烯量子点中单电子传输的统计数据
Counting Statistics of Single Electron Transport in Bilayer Graphene Quantum Dots
论文作者
论文摘要
我们通过用电容耦合的相邻量子点实时检测单电子隧道，测量双层石墨烯中静电定义的量子点中电流波动的电报噪声。在实验中证明了可调石墨烯量子点中第二和第三累积剂（与射击噪声有关）的抑制。通过这种方法，我们证明了测量非常低电流和噪声水平的能力。此外，我们使用这种方法来研究第一个自旋激发态，这是测量自旋松弛的基本先决条件。
We measure telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with a capacitively coupled neighboring quantum dot. Suppression of the second and third cumulant (related to shot noise) in a tunable graphene quantum dot is demonstrated experimentally. With this method we demonstrate the ability to measure very low current and noise levels. Furthermore, we use this method to investigate the first spin excited state, an essential prerequisite to measure spin relaxation.
