AIP conference proceedings

Bolometric Shot Noise Detection in Coupled Quantum Point Contacts

Masayuki Hashisaka, Yoshiaki Yamauchi, Shuji Nakamura, Shinya Kasai, Teruo Ono, Kensuke Kobayashi, Marilia Junqueira Caldas, Nélson Studart

Published Jan 1, 2010• 0 citations

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Abstract

We demonstrate the on‐chip bolometric detection of the quantum shot noise emitted from a biased quantum point contact (source QPC) by using another QPC (detector QPC). These QPCs are capacitively coupled to each other to exchange high‐frequency (∼GHz) fluctuation. By applying the noise thermometry to both QPCs at several temperatures, we prove that the excess noise temperature of detector QPC is perfectly proportional to that of source QPC.

DOI: 10.1063/1.3295455

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