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Phys. Rev. Lett. 98, 207001 (2007) [4 pages]

Wideband Detection of the Third Moment of Shot Noise by a Hysteretic Josephson Junction

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A. V. Timofeev1,2, M. Meschke1, J. T. Peltonen1, T. T. Heikkilä1, and J. P. Pekola1
1Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 3500, 02015 TKK, Finland
2Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, 142432 Russia

Received 4 December 2006; published 16 May 2007

We use a hysteretic Josephson junction as an on-chip detector of the third moment of shot noise of a tunnel junction. The detectable bandwidth is determined by the plasma frequency of the detector, which is about 50 GHz in the present experiment. The third moment of shot noise results in a measurable change of the switching rate when reversing polarity of the current through the noise source. We analyze the observed asymmetry assuming adiabatic response of the detector.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.207001
DOI:
10.1103/PhysRevLett.98.207001
PACS:
74.50.+r, 05.40.−a, 72.70.+m, 74.40.+k