Measuring non-gaussian fluctuations through incoherent cooper-pAir current

Tero T. Heikkilä; Pauli Virtanen; Göran Johansson; Frank K. Wilhelm

doi:10.1103/PhysRevLett.93.247005

Measuring non-gaussian fluctuations through incoherent cooper-pAir current

Tero T. Heikkilä^*, Pauli Virtanen, Göran Johansson, Frank K. Wilhelm

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

An on-chip detector of voltage fluctuations based on capacitively coupling a noise source to a small Josephson junction (JJ) in Coulomb-blockade was analyzed. The current-voltage characteristics of the JJ were found to be sensitive to the excess voltage fluctuations in the source. It was observed that via the symmetry of the detector output current, the contributions from the second and third cumulants could be identified. It was concluded that after calibration, one can measure the Fano factors for the noise source and get information about the frequency dependence of the noise.

Original language	English
Article number	247005
Journal	Physical Review Letters
Volume	93
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.93.247005
State	Published - 10 Dec 2004
Externally published	Yes

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10.1103/PhysRevLett.93.247005

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title = "Measuring non-gaussian fluctuations through incoherent cooper-pAir current",

abstract = "An on-chip detector of voltage fluctuations based on capacitively coupling a noise source to a small Josephson junction (JJ) in Coulomb-blockade was analyzed. The current-voltage characteristics of the JJ were found to be sensitive to the excess voltage fluctuations in the source. It was observed that via the symmetry of the detector output current, the contributions from the second and third cumulants could be identified. It was concluded that after calibration, one can measure the Fano factors for the noise source and get information about the frequency dependence of the noise.",

author = "Heikkil{\"a}, {Tero T.} and Pauli Virtanen and G{\"o}ran Johansson and Wilhelm, {Frank K.}",

note = "Funding Information: We acknowledge the useful discussions with W. Belzig, P. J. Hakonen, G.-L. Ingold, M. Kindermann, R. Lindell, and E. B. Sonin, and the support by the EU-IHP ULTI III (HPRI-1999-CT-00050) visitor program. ",

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doi = "10.1103/PhysRevLett.93.247005",

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AU - Johansson, Göran

AU - Wilhelm, Frank K.

N1 - Funding Information: We acknowledge the useful discussions with W. Belzig, P. J. Hakonen, G.-L. Ingold, M. Kindermann, R. Lindell, and E. B. Sonin, and the support by the EU-IHP ULTI III (HPRI-1999-CT-00050) visitor program.

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N2 - An on-chip detector of voltage fluctuations based on capacitively coupling a noise source to a small Josephson junction (JJ) in Coulomb-blockade was analyzed. The current-voltage characteristics of the JJ were found to be sensitive to the excess voltage fluctuations in the source. It was observed that via the symmetry of the detector output current, the contributions from the second and third cumulants could be identified. It was concluded that after calibration, one can measure the Fano factors for the noise source and get information about the frequency dependence of the noise.

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Measuring non-gaussian fluctuations through incoherent cooper-pAir current

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