Équipe de Recherche en Physique de l'Information Quantique


author = {Gabelli, J., Reulet, B.},
title = {The noise susceptibility of a coherent conductor},
journal = {Proceedings of SPIE - Fluctuations and Noise in Materials},
year = {2007},
volume = {6600-25},
art_number = {66000T},
note = {cited By (since 1996) 0},
url = {http://www.scopus.com/inward/record.url?eid = 2-s2.0-36249016243&partnerID = 40&md5 = 2e4b4ee0659bc9f66428aeaa1423dcfe},
affiliation = {Laboratoire de Physique des Solides, UMR8502 Bâtiment 510, Université Paris-Sud, 91405 Orsay Cedex, France},
abstract = {The complex ac conductance G(ω0) of a system measures the dynamical response of the current to a small voltage excitation at frequency ω0. It cannot in general be deduced from the only knowledge of the dc I(V) characteristics. Similarly, we investigate the dynamical response of current noise to an ac excitation, i.e. the in-phase and out-of-phase response of current noise density S(ω) measured at frequency ω. We present a detailed calculation of this new response function Χω0 (ω), that we name noise susceptibility, at arbitrary frequencies for a coherent conductor in the scattering matrix formalism. We exemplify the relevance of our calculation by the measurement of the noise susceptibility of a tunnel junction in the quantum regime ℏω ∼ ℏω0 ≫ kBT, which is in remarkable agreement with our theory.},
author_keywords = {Dynamics; Quantum noise; Shot noise},
document_type = {Conference Paper},
source = {Scopus}}