Detection of finite frequency current moments with a dissipative resonant circuit

Details Detection of finite frequency current moments with a dissipative resonant circuit Detection of finite frequency current moments with a dissipative resonant circuit

2007-02-09

arxiv.org/abs/cond-mat/0702247v1

Physical Review Letters 99, 6 (2007) 066601

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.99.066601

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. Dissipation is included via the Caldeira-Leggett model, and it is essential to include it in order for the charge fluctuations (or the measured noise) to remain finite. We identify which combination of current correlators enter the measurement of the third moment. The latter remains stable for zero damping. Results are illustrated briefly for a quantum point contact.

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