CNT Quantum dots as Terahertz detectors

ORAL

Abstract

We study Carbon Nanotube (CNT) quantum dots as detectors of THz radiation via photon assisted single electron tunneling. Although successful detection was recently demonstrated [1], the coupling between the CNT and THz radiations was very weak. Here, we implement a novel device design where the radiation is effectively coupled to the CNT quantum dot through broad band on-chip antennas. We show that the enhanced coupling yields a highly sensitive broad band Terahertz sensor. \\[4pt] [1] Y. Kawano, S. Toyokawa, T. Uchida and K. Ishibashi, THz photon assisted tunneling in carbon-nanotube quantum dots, Journal of Applied Physics 103, 034307 (2008).

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Authors

  • Mohamed Rinzan

    Physics Department, Georgetown University

  • Greg Jenkins

    Department of Physics, University of Maryland

  • H. Dennis Drew

    Department of Physics, University of Maryland, University of Maryland

  • Serhii Shafranjuk

    Northwestern University, Physics and Astronomy Department, Northwestern University, Department of Physics and Astronomy, Northwestern University

  • Paola Barbara

    Physics Department, Georgetown University, Georgetown University