Detecting THz current fluctuations in a quantum point contact using a nanowire quantum dot - Condensed Matter > Mesoscale and Nanoscale PhysicsReport as inadecuate




Detecting THz current fluctuations in a quantum point contact using a nanowire quantum dot - Condensed Matter > Mesoscale and Nanoscale Physics - Download this document for free, or read online. Document in PDF available to download.

Abstract: We use a nanowire quantum dot to probe high-frequency current fluctuations ina nearby quantum point contact. The fluctuations drive charge transitions inthe quantum dot, which are measured in real-time with single-electron detectiontechniques. The quantum point contact GaAs and the quantum dot InAs arefabricated in different material systems, which indicates that the interactionsare mediated by photons rather than phonons. The large energy scales of thenanowire quantum dot allow radiation detection in the long-wavelength infraredregime.



Author: S. Gustavsson, I. Shorubalko, R. Leturcq, T. Ihn, K. Ensslin, S. Schön

Source: https://arxiv.org/



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