Violating Bell inequalities with entangled optical frequency combs and multipixel homodyne detection

William N. Plick, Francesco Arzani, Nicolas Treps, Eleni Diamanti, and Damian Markham
Phys. Rev. A 98, 062101 – Published 3 December 2018
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Abstract

We have theoretically investigated the possibility of using any of several continuous-variable Bell-type inequalities—for which the dichotomic measurements are achieved with coarse-grained quadrature (homodyne) measurements—in a multiparty configuration where each participant is given a section, in the frequency domain, of the output of an optical parametric oscillator which has been synchronously pumped with a frequency comb. Such light sources are undergoing intense study due to their novel properties, including the potential for production of light entangled in many hundreds of physical modes—a critical component for many proposals in optical or hybrid-optical quantum computation proposals. The situation we study notably uses only highly efficient optical homodyne detection, meaning that in such systems the fair-sampling loophole would be relatively easy to avoid.

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  • Received 25 May 2018

DOI:https://doi.org/10.1103/PhysRevA.98.062101

©2018 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

William N. Plick1, Francesco Arzani2, Nicolas Treps2, Eleni Diamanti3, and Damian Markham3

  • 1Department of Physics, University of Dayton, 300 College Park, Dayton, Ohio 45469, USA
  • 2Laboratoire Kastler Brossel, Sorbonne Universités, CNRS, ENS-PSL Research University, Collége de France and CNRS, 4 place Jussieu, F-75252 Paris, France
  • 3Laboratoire d'Informatique de Paris 6, CNRS, Sorbonne Université, 4 place Jussieu, 75005 Paris, France

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Issue

Vol. 98, Iss. 6 — December 2018

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