In recent work involving NanoLund's Lars Samuelson, Hongqi Xu and Sören Jeppesen closely collaborating with a group at University of Tokyo/RIKEN in Japan and a group at Peking University in China describes how they have successfully realized a double nanowire Josephson junction device and discovered an enhancement of supercurrent arising from coherent splits of Cooper pairs by 1D electron-electron correlation induced inter-wire superconductivity. The work published in Science Advances demonstrates that double nanowires can be used to design efficient sources of spin-entangled electrons for quantum information processing and to developing topological quantum devices for quantum computations.

Read the press release here (in Swedish: Osynligt band mellan elektroner banar väg för morgondagens kvantdatorer) or read the article Dominant nonlocal superconducting proximity effect due to electron-electron interaction in a ballistic double nanowire by Ueda et al in Science Advances DOI: 10.1126/sciadv.aaw2194. The article has also appeared in forskning.se (in Swedish).