Conversion of twisted light to twisted excitons using carbon nanotubes  

作　　者：Xiaoning Zang Nirpendra Singh Mark T.Lusk Udo Schwingenschlögl 

机构地区：[1]Applied Physics Program,Physical Sciences and Engineering Division,King Abdullah University of Science and Technology(KAUST),Thuwal,23955-6900,Saudi Arabia [2]Department of Physics,Khalifa University of Science and Technology,Abu Dhabi,127788,United Arab Emirates [3]Department of Physics,Colorado School of Mines,Golden,CO,80401,USA

出　　处：《npj Computational Materials》2022年第1期392-402,共11页计算材料学（英文）

基　　金：The research reported in this publication was supported by funding from King Abdullah University of Science and Technology(KAUST).

摘　　要：Carbon nanotubes are explored as a means of coherently converting the orbital angular momentum of light to an excitonic form that is more amenable to quantum information processing.An analytical analysis,based on dynamical conductivity,is used to show that orbital angular momentum is conserved,modulo N,for a carbon nanotube illuminated by radially polarized,twisted light.This result is numerically demonstrated using real-time time-dependent density functional theory which captures the absorption of twisted light and the subsequent transfer of twisted excitons.The results suggest that carbon nanotubes are promising candidates for constructing optoelectronic circuits in which quantum information is more readily processed while manifested in excitonic form.

关 键 词：TWISTED CARBON LIGHT 

分 类 号：TB383[一般工业技术—材料科学与工程]