Effect of the shot-noise on a Coulomb blockaded single Josephson junction

Details Effect of the shot-noise on a Coulomb blockaded single Josephson junction Effect of the shot-noise on a Coulomb blockaded single Josephson junction

2004-03-17

arxiv.org/abs/cond-mat/0403428v2

Phys. Rev. B 70, 140506(R) (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure; figure and typos corrected, added references

Scientific paper

10.1103/PhysRevB.70.140506

We have investigated how the Coulomb blockade of a mesoscopic Josephson junction in a high-impedance environment is suppressed by shot noise from an adjacent junction. The presented theoretical analysis is an extension of the phase correlation theory for the case of a non-Gaussian noise. Asymmetry of the non-Gaussian noise should result in the shift of the conductance minimum from zero voltage and the ratchet effect (nonzero current at zero voltage), which have been experimentally observed. The analysis demonstrates that a Coulomb blockaded tunnel junction in a high impedance environment can be used as an effective noise detector.

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