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Full counting statistics of Cooper pair shuttling

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
Article number212509
<mark>Journal publication date</mark>28/12/2004
<mark>Journal</mark>Physical Review B - Condensed Matter and Materials Physics
Issue number21
Volume70
Number of pages4
Pages (from-to)1-4
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The Cooper pair shuttle is a simple model system that combines features of coherent and incoherent transport. We evaluate the full counting statistics (FCS) of charge transfer via the shuttle in the incoherent regime. We describe two limiting cases when the FCS allows for classical interpretation. Generally, the classical interpretation fails, yielding negative and imaginary "probabilities." This signals that superconducting coherence survives even in the incoherent regime. We evaluate the current noise in some detail.