author={Yakov Matyushkin and Sergey N Danilov and Maxim Moskotin and Vsevolod Belosevich and Natalia S. Kaurova and Maxim G. Rybin and Elena D. Obraztsova and Georgy Fedorov and Ilya V. Gorbenko and Valentin Yu. Kachorovskii and Sergey D. Ganichev},
  journal={Nano letters},
Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in terahertz frequency range. In this Letter, we explore a plasmonic interferometer based on graphene Field Effect Transistor connected to specially designed antennas. As a key result, we observe helicity- and phase-sensitive conversion of circularly-polarized radiation into dc photovoltage caused by the plasmon-interference mechanism: two plasma waves, excited at the source and drain part of… 

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