Current noise spectrum of a single-particle emitter: Theory and experiment

F. D. Parmentier*, E. Bocquillon, J. M. Berroir, D. C. Glattli, B. Plaçais, G. Fève, M. Albert, C. Flindt, M. Büttiker

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

86 Citations (Scopus)

Abstract

The controlled and accurate emission of coherent electronic wave packets is of prime importance for future applications of nanoscale electronics. Here, we present a theoretical and experimental analysis of the finite-frequency noise spectrum of a periodically driven single-electron emitter. The electron source consists of a mesoscopic capacitor that emits single electrons and holes into a chiral edge state of a quantum Hall sample. We compare experimental results with two complementary theoretical descriptions: on the one hand, the Floquet scattering theory that leads to accurate numerical results for the noise spectrum under all relevant operating conditions, and on the other hand, a semiclassical model that enables us to develop an analytic description of the main sources of noise when the emitter is operated under optimal conditions. We find excellent agreement between experiment and theory. Importantly, the noise spectrum provides us with an accurate description and characterization of the mesoscopic capacitor when operated as a periodic single-electron emitter.

Original languageEnglish
Article number165438
Pages (from-to)1-15
Number of pages15
JournalPhysical Review B
Volume85
Issue number16
DOIs
Publication statusPublished - 23 Apr 2012
MoE publication typeA1 Journal article-refereed

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