Private random numbers produced by entangled ions and certified by Bell's theorem

ORAL

Abstract

It has been shown that entangled particles can be used to generate numbers whose privacy and randomness are guaranteed by the violation of a Bell inequality [1,2]. The authenticity of the bit stream produced is guaranteed when the system used can close the detection loophole and when the entangled particles are non-interacting. We report the use of remotely located trapped ions with near perfect state detection efficiency as a private random number generator. By entangling the ions through photon interference and choosing the measurement settings using a pseudo-random number generator, we measure a CHSH correlation function that is more than seven standard deviations above the classical limit. With a total of 3016 events, we are able to certify the generation of 42 new random numbers with 99{\%} confidence. [1] S. Pironio et al.(submitted to Nature, arXiv:0911.3427) [2] Colbeck, R. PhD Dissertation (2007)

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Authors

  • D. Hayes

    JQI and University of Maryland, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, MD 20742

  • D.N. Matsukevich

    JQI and University of Maryland, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, MD 20742

  • Peter Maunz

    JQI and University of Maryland

  • C. Monroe

    JQI and University of Maryland, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, MD 20742

  • S. Olmschenk

    NIST/JQI, NIST, University of Maryland Department of Physics and National Institute of Standards and Technology, College Park, MD 20742