Detecting Current Noise with a Josephson Junction in the Macroscopic Quantum Tunneling Regime
arXiv:cond-mat/0611593 · doi:10.1007/s10909-006-9272-y
Abstract
We discuss the use of a hysteretic Josephson junction to detect current fluctuations with frequencies below the plasma frequency of the junction. These adiabatic fluctuations are probed by switching measurements observing the noise-affected average rate of macroscopic quantum tunneling of the detector junction out of its zero-voltage state. In a proposed experimental scheme, frequencies of the noise are limited by an on-chip filtering circuit. The third cumulant of current fluctuations at the detector is related to an asymmetry of the switching rates.
26 pages, 10 figures. To appear in Journal of Low Temperature Physics in the proceedings of the ULTI conference organized in Lammi, Finland (2006)
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Cited by in corpus (5)
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- Wide-band detection of the third moment of shot noise by a hysteretic Josephson junction
- Noise induced phenomena in point Josephson junctions
- Measuring the distribution of current fluctuations through a Josephson junction with very short current pulses