Published in

Nature Research, Nature Communications, 1(3), 2012

DOI: 10.1038/ncomms1628

Links

Tools

Export citation

Search in Google Scholar

Conclusive quantum steering with superconducting transition-edge sensors

Journal article published in 2012 by Devin H. Smith, Geoff Gillett, Marcelo P. de Almeida, Marcelo P. De Almeida, Cyril Branciard, Alessandro Fedrizzi ORCID, Till J. Weinhold, Adriana Lita, Brice Calkins, Thomas Gerrits, Howard Mark Wiseman ORCID, Sae Woo Nam, Andrew G. White
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Red circle
Postprint: archiving forbidden
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

Quantum steering allows two parties to verify shared entanglement even if one measurement device is untrusted. A conclusive demonstration of steering through the violation of a steering inequality is of considerable fundamental interest and opens up applications in quantum communication. To date, all experimental tests with single-photon states have relied on post selection, allowing untrusted devices to cheat by hiding unfavourable events in losses. Here we close this 'detection loophole' by combining a highly efficient source of entangled photon pairs with superconducting transition-edge sensors. We achieve an unprecedented ~62% conditional detection efficiency of entangled photons and violate a steering inequality with the minimal number of measurement settings by 48 s.d.s. Our results provide a clear path to practical applications of steering and to a photonic loophole-free Bell test.