Resonance energy and charge pumping through quantum SINIS contacts
  We propose a mechanism of quantum pumping mediated by the spectral flow in a voltage-biased SINIS quantum junction and realized via the sequential closing of the minigaps in the energy spectrum in resonance with the Josephson frequency. We show that the dc current exhibits giant peaks at rational voltages. 
N.B. Kopnin, A.S. Mel'nikov, V.M. Vinokur