Zero-average Bias Bidirectional Single-electron Current Generation in a Hybrid Turnstile

Marco Marin Suarez, Yuri A. Pashkin, Joonas Peltonen, J.P. Pekola

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
46 Downloads (Pure)

Abstract

Hybrid turnstiles have proven to generate accurate single-electron currents. The usual operation consists of applying a periodic modulation to a capacitively coupled gate electrode and requires a nonzero DC source-drain bias voltage. Under this operation, a current of the same magnitude and opposite direction can be generated by flipping the polarity of the bias. Here, we demonstrate that accurate single-electron currents can be generated under zero average bias voltage. We achieve this by applying an extra periodic modulation with twice the frequency of the gate signal and zero DC level to the source electrode. This creates a time interval, which is otherwise zero, between the crossings of tunnelling thresholds that enable single-electron tunnelling. Furthermore, we show that within this operation the current direction can be reversed by only shifting the phase of the source signal.
Original languageEnglish
Pages (from-to)232-240
Number of pages9
JournalJournal of Low Temperature Physics
Volume210
Issue number1-2
Early online date8 Oct 2022
DOIs
Publication statusPublished - Jan 2023
MoE publication typeA1 Journal article-refereed

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