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Phys. Rev. Lett. 99, 066601 (2007) [4 pages]

Detection of Finite-Frequency Current Moments with a Dissipative Resonant Circuit

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A. Zazunov1,2, M. Creux1, E. Paladino3,1, A. Crépieux1, and T. Martin1
1Centre de Physique Théorique, Université de la Méditerranée, Case 907, 13288 Marseille, France
2LPMMC, Av. des Martyrs, 38042 Grenoble, France
3MATIS CNR-INFM, and D.M.F.C.I., Universitá di Catania, 95125 Catania, Italy

Received 9 February 2007; published 6 August 2007

We consider the measurement of higher current moments with a dissipative resonant circuit, which is coupled inductively to a mesoscopic device in the coherent regime. Information about the higher current moments is coded in the histograms of the charge on the capacitor plates of the resonant circuit. The role of dissipation is shown to be essential for the measured noise to remain finite. We also identify which combination of current correlators enters the measurement of the third moment. The results are illustrated for a quantum point contact.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.066601
DOI:
10.1103/PhysRevLett.99.066601
PACS:
72.70.+m, 73.23.−b, 73.50.Td, 74.40.+k