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.
- Received 25 May 2018
DOI:https://doi.org/10.1103/PhysRevA.98.062101
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