Demonstrating Continuous Variable EPR Steering in spite of Finite Experimental Capabilities using Fano Steering Bounds

Abstract

We show how one can demonstrate continuous-variable EPR-steering without needing to characterize entire measurement probability distributions. To do this, we develop a modified Fano inequality useful for discrete measurements of continuous variables, and use it to bound the conditional uncertainties in continuous-variable entropic EPR-steering inequalities. With these bounds, we show how one can hedge against experimental limitations including a finite detector size, dead space between pixels, and any such factors that impose an incomplete sampling of the true measurement probability distribution. Furthermore, we use experimental data from the position and momentum statistics of entangled photon pairs in parametric downconversion to show that this method is sufficiently sensitive for practical use.

DOI: 10.1364/JOSAB.32.0000A8

Extracted Key Phrases

2 Figures and Tables

Cite this paper

@article{Schneeloch2014DemonstratingCV, title={Demonstrating Continuous Variable EPR Steering in spite of Finite Experimental Capabilities using Fano Steering Bounds}, author={James Schneeloch and Samuel H. Knarr and Gregory A. Howland and John C. Howell}, journal={CoRR}, year={2014}, volume={abs/1410.8853} }