2004/10/29 by Antti O. Niskanen, A. O. Niskanen, Jani M. Kivioja +5 · 1 citation
Chemistry · Computer Science · Physics and Astronomy · #Charge (physics) #Chemistry #Condensed matter physics #Cooper pair #Current (fluid) #Flux (metallurgy) #Fluxon #Josephson effect #Magnetic field #Magnetic flux #Magnetic flux quantum #Mesoscopic physics #Physics #Physics of Superconductivity and Magnetism #Pi Josephson junction #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Quasiparticle #Squid #Superconducting tunnel junction #Superconductivity #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.71.012513
4 pages
arxiv created 2004/10/29 · openalex publication_date 2005/01/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have experimentally demonstrated pumping of Cooper pairs in a single-island mesoscopic structure. The island was connected to leads through SQUID (superconducting quantum interference device) loops. Synchronized flux and voltage signals were applied whereby the Josephson energies of the SQUIDs and the gate charge were tuned adiabatically. From the current-voltage characteristics one can see that the pumped current increases in 1e steps which is due to quasiparticle poisoning on the measurement time scale, but we argue that the transport of charge is due to Cooper pairs.