Photon-Assisted Shot Noise in Graphene in the Terahertz Range
Résumé
When subjected to electromagnetic radiation, the fluctuation of the electronic current across a quantum
conductor increases. This additional noise, called photon-assisted shot noise, arises from the generation and
subsequent partition of electron-hole pairs in the conductor. The physics of photon-assisted shot noise has
been thoroughly investigated at microwave frequencies up to 20 GHz, and its robustness suggests that it
could be extended to the terahertz (THz) range. Here, we present measurements of the quantum shot noise
generated in a graphene nanoribbon subjected to a THz radiation. Our results show signatures of photonassisted
shot noise, further demonstrating that hallmark time-dependant quantum transport phenomena can
be transposed to the THz range
Domaines
Physique [physics]
Origine : Fichiers produits par l'(les) auteur(s)