Nonadiabatic charge pumping in a hybrid single-electron taransistor

Dmitri Averin, Jukka pekola

Research output: Contribution to journalArticleScientificpeer-review

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We study theoretically current quantization in the charge turnstile based on the superconductor–normal-metal single-electron transistor. The quantization accuracy is limited by either Andreev reflection or by Cooper-pair–electron cotunneling. The rates of these processes are calculated in the “above-the-threshold” regime when they compete directly with the lowest-order tunneling. By shaping the ac gate voltage drive it should be possible to achieve the metrological accuracy of 10−8, while maintaining the quantized current on the level of 30 pA, just by one turnstile with realistic parameters using aluminum as a superconductor.
Original languageEnglish
Article number066801
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Issue number6
Publication statusPublished - 4 Aug 2008
MoE publication typeA1 Journal article-refereed


  • charge pumping
  • single-electron transistor


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