首都师范大学学报（自然科学版）2025，Vol.46Issue(1)：32-39,8.DOI:10.19789/j.1004-9398.2025.01.005
双量子点-拓扑超导体混合系统中的散粒噪声及其谱分解
Shot noise and its spectral decomposition in hybrid system of double quantum dots-topological superconductor
摘要
Abstract
The shot noise of electron transport processes in a hybrid system of double quantum dots coupled to topological superconducting nanowire is studied.There may be various coherent tunneling mechanisms in the system,and we investigate the shot noise in four cases of mixed systems,when the Majorana bound state and the Poorman's Majorana bound state do not exist,and when they exist respectively and simultaneously.It is found that two coherent tunneling mechanisms corresponding to the two bound states result in significant enhancement of the low and zero frequency shot noise,but affect the depth and dynamics behavior of the characteristic valley of shot noise significantly differently.It can provide evidence to distinguish Majorana bound states and Poorman's Majorana bound state.In addition,the shot noise spectral is decomposed.Studying the components,one finds that system-environment interactions,as well as single electron transport,competes with electron coherent tunneling.This paper contributes to a deeper understanding of the nature of Majorana bound states.关键词
Majorana束缚态/量子点/散粒噪声/量子输运/谱分解Key words
Majorana bound state/quantum dot/shot noise/quantum transport/shot noise spectral decomposition分类
数理科学引用本文复制引用
陈开伟,刘振乡,郭航,郭健宏..双量子点-拓扑超导体混合系统中的散粒噪声及其谱分解[J].首都师范大学学报（自然科学版）,2025,46(1):32-39,8.
