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Carbon Nanotube Quantum Dots As Highly Sensitive Terahertz-Cooled Spectrometers.
journal contribution
posted on 2016-02-20, 19:44 authored by M. Rinzan, G. Jenkins, H. D. Drew, S. Shafranjuk, P. BarbaraTerahertz technology has recently emerged as a highly
sought-after
and versatile scientific tool in many fields, including medical imaging,
security screening, and wireless communication. However, scientific
progress has been hindered by the lack of sources and detectors in
this frequency range, thereby known as the terahertz gap. Here, we
show that carbon nanotube quantum dots coupled to antennas are extremely
sensitive, broad-band, terahertz quantum detectors with spectral resolution.
Their response is due to photon-assisted single-electron tunneling
and it is substantially enhanced by a novel radiation-induced nonequilibrium
cooling of the electrons, causing a sharp height increase of the Coulomb
oscillation peaks.
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carbon Nanotube Quantum Dotscommunicationlackfrequency rangetechnologyantennasourcecoolingSpectrometers.Terahertzprogressterahertz gaptoolSensitiveelectronsecurity screeningimagingCoulomb oscillation peaksresponseterahertz quantum detectorscarbon nanotube quantum dotsheight increasetunnelingnonequilibrium