Full Counting Statistics of Andreev Tunneling
V. F. Maisi, D. Kambly, C. Flindt, J. P. Pekola
TL;DR
This paper measures the full counting statistics of Andreev tunneling events, revealing a pattern of quiet periods interrupted by electron-triggered avalanches, demonstrating super-Poissonian distributions in superconductor/normal-metal interfaces.
Contribution
It introduces a single-charge counting technique to analyze the full counting statistics of Andreev events, highlighting the avalanche behavior and super-Poissonian distributions.
Findings
Identification of quiet periods and electron-triggered avalanches
Observation of strongly super-Poissonian distributions
Demonstration of the technique's effectiveness in superconductor/normal-metal interfaces
Abstract
We employ a single-charge counting technique to measure the full counting statistics (FCS) of Andreev events in which Cooper pairs are either produced from electrons that are reflected as holes at a superconductor/normal-metal interface or annihilated in the reverse process. The FCS consists of quiet periods with no Andreev processes, interrupted by the tunneling of a single electron that triggers an avalanche of Andreev events giving rise to strongly super-Poissonian distributions.
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