Fast and accurate Cooper pair pump

Paolo A. Erdman*, Fabio Taddei, Joonas T. Peltonen, Rosario Fazio, Jukka P. Pekola

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

73 Downloads (Pure)

Abstract

We propose a method to perform accurate and fast charge pumping in superconducting nanocircuits. Combining topological properties and quantum control techniques based on shortcuts to adiabaticity, we show that it is theoretically possible to achieve perfectly quantized charge pumping at any finite-speed driving. Model-specific errors may still arise due the difficulty of implementing the exact control. We thus assess this and other practical issues in a specific system comprised of three Josephson junctions. Using realistic system parameters, we show that our scheme can improve the pumping accuracy of this device by various orders of magnitude. Possible metrological perspectives are discussed.

Original languageEnglish
Article number235428
Pages (from-to)1-11
Number of pages11
JournalPhysical Review B
Volume100
Issue number23
DOIs
Publication statusPublished - 16 Dec 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • SINGLE-ELECTRON TRANSISTOR
  • QUANTIZED CURRENT

Fingerprint

Dive into the research topics of 'Fast and accurate Cooper pair pump'. Together they form a unique fingerprint.

Cite this