Charge and current fluctuations in a superconducting single-electron transistor near a Cooper pair resonance

Mahn Soo Choi, Mahn Soo Choi, Francesco Plastina, Rosario Fazio

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We analyze charge tunneling statistics and current noise in a superconducting single-electron transistor in a regime where the Josephson-quasiparticle cycle is the dominant mechanism of transport. Due to the interplay between Coulomb blockade and Josephson coherence, the probability distribution for tunneling events strongly deviates from a Poissonian and displays a pronounced even-odd asymmetry in the number of transmitted charges. The interplay between charging and coherence is reflected also in the zero-frequency current noise which is significantly quenched when the quasiparticle tunneling rates are comparable to the coherent Cooper pair oscillation frequency. Furthermore, the finite frequency spectrum shows a strong enhancement near the resonant transition frequency for Josephson tunneling.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number4
DOIs
Publication statusPublished - 2003 Jan 21

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Charge and current fluctuations in a superconducting single-electron transistor near a Cooper pair resonance'. Together they form a unique fingerprint.

  • Cite this