TY - JOUR
T1 - Conversion of twisted light to twisted excitons using carbon nanotubes
AU - Zang, Xiaoning
AU - Singh, Nirpendra
AU - Lusk, Mark T.
AU - Schwingenschlögl, Udo
N1 - KAUST Repository Item: Exported on 2022-04-06
Acknowledgements: The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.
PY - 2022/3/17
Y1 - 2022/3/17
N2 - 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 $\textit{N}$, 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.
AB - 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 $\textit{N}$, 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.
UR - http://hdl.handle.net/10754/676125
UR - https://www.nature.com/articles/s41524-022-00726-6
UR - http://www.scopus.com/inward/record.url?scp=85126559459&partnerID=8YFLogxK
U2 - 10.1038/s41524-022-00726-6
DO - 10.1038/s41524-022-00726-6
M3 - Article
SN - 2057-3960
VL - 8
JO - npj Computational Materials
JF - npj Computational Materials
IS - 1
ER -