Detection-loophole-free test of quantum nonlocality, and applications

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C.W. Lim, N. Gisin, P. G. Kwiat

Research output: Contribution to journalArticle

Abstract

We present a source of entangled photons that violates a Bell inequality free of the "fair-sampling" assumption, by over 7 standard deviations. This violation is the first reported experiment with photons to close the detection loophole, and we demonstrate enough "efficiency" overhead to eventually perform a fully loophole-free test of local realism. The entanglement quality is verified by maximally violating additional Bell tests, testing the upper limit of quantum correlations. Finally, we use the source to generate "device-independent" private quantum random numbers at rates over 4 orders of magnitude beyond previous experiments.

Original languageEnglish (US)
Article number130406
JournalPhysical review letters
Volume111
Issue number13
DOIs
StatePublished - Sep 26 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Detection-loophole-free test of quantum nonlocality, and applications'. Together they form a unique fingerprint.

  • Cite this

    Christensen, B. G., McCusker, K. T., Altepeter, J. B., Calkins, B., Gerrits, T., Lita, A. E., Miller, A., Shalm, L. K., Zhang, Y., Nam, S. W., Brunner, N., Lim, C. C. W., Gisin, N., & Kwiat, P. G. (2013). Detection-loophole-free test of quantum nonlocality, and applications. Physical review letters, 111(13), [130406]. https://doi.org/10.1103/PhysRevLett.111.130406