Loophole-Free Bell Inequality Violation with Superconducting Circuits: Experiment

ORAL

Abstract

To our knowledge, no loophole-free Bell tests have been performed with macroscopic degrees of freedom to date. Here we present our progress towards performing such a test with superconducting qubits separated by 30 meters of physical distance. In that setting, we attempt to close the locality, detection and freedom-of-choice loopholes and present first data. Realizing loophole-free Bell tests is a key ingredient for future applications such as device-independent quantum information processing [1, 2].

[1] R. Colbeck and R. Renner, Nature Physics 8 (2012)

[2] U. Vazirani et al., PRL 116, 089901 (2016)

*This work is supported by the European Research Council (ERC), by the FET Open inititative from the European Union's Horizon 2020 programme, by the NCCR QSIT, by ETH Zurich, by NSERC, the Canada First Research Excellence Fund and by the Vanier Canada Graduate Scholarships.

Presenters

  • Simon Storz

    • ETH Zürich

Authors

  • Simon Storz

    • ETH Zürich
  • Josua Schär

    • ETH Zurich
  • Anatoly Kulikov

    • ETH Zurich
  • Paul Magnard

    • ETH Zurich
  • Philipp Kurpiers

    • ETH Zurich
  • Janis Lütolf

    • ETH Zurich
  • Adrian Copetudo

    • ETH Zurich
  • Kevin Reuer

    • ETH Zurich
  • Abdulkadir Akin

    • ETH Zurich
  • Jean-Claude Besse

    • ETH Zurich
  • Mihai Gabureac

    • ETH Zurich
  • Graham J Norris

    • ETH Zurich
    • Department of Physics, ETH Zurich, CH-8093 Zurich, Switzerland
  • Andrés Rosario

    • ETH Zurich
  • Baptiste Royer

    • Yale University
  • Alexandre Blais

    • Universite de Sherbrooke
    • Institut quantique & Département de Physique, Université de Sherbrooke, Sherbrooke J1K2R1, Quebec, Canada
  • Andreas Wallraff

    • ETH Zurich
    • Department of Physics, ETH Zurich, CH-8093 Zurich, Switzerland