Fast and accurate Cooper pair pump

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • Scuola Normale Super Pisa, Scuola Normale Superiore di Pisa, NEST
  • CNR, Consiglio Nazionale delle Ricerche (CNR), Istituto Nanoscienze (NANO-CNR), Ist Nanosci
  • CNR, Consiglio Nazionale delle Ricerche (CNR), Istituto Nanoscienze (NANO-CNR), NEST, Ist Nanosci

Kuvaus

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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli235428
Sivut1-11
Sivumäärä11
JulkaisuPhysical Review B
Vuosikerta100
Numero23
TilaJulkaistu - 16 joulukuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 40268896