Dynamics and Third Cumulant of Quantum Noise

January 28 2009
Types d’événements
Séminaire SPEC
Julien Gabelli
SPEC Salle Itzykson, Bât.774
28/01/2009
to 11:15

The existence of the third cumulant $S_{3}$ of voltage fluctuations has demonstrated the non-Gaussian aspect of shot noise in electronic transport. Until now, measurements have been performed at low frequency, textit{i.e.} in the classical regime $hbar omega eV,, k_BT$. In this regime, experiment cannot be seen as a charge counting statistics problem anymore. It raises central questions of the statistics of quantum noise, in particular: begin{enumerate} item The electromagnetic environment of the sample has been proven to strongly influence the measurement, through the possible modulation of the noise of the sample. What happens to this mechanism in the quantum regime? item For $eV

Laboratoire de Physique des Solides, UMR8502 Bât.510, Université Paris-Sud