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Violation of Bell's inequality using classical measurements and non-linear local operations

Magdalena Stobińska·Hyunseok Jeong·Timothy C. Ralph
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Abstract

We find that Bell's inequality can be significantly violated (up to Tsirelson's bound) with two-mode entangled coherent states using only homodyne measurements. This requires Kerr nonlinear interactions for local operations on the entangled coherent states. Our example is a demonstration of Bell-inequality violations using classical measurements. We conclude that entangled coherent states with coherent amplitudes as small as 0.842 are sufficient to produce such violations.

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Magdalena Stobińska, Hyunseok Jeong, Timothy C. Ralph. 2007-03-25. Violation of Bell's inequality using classical measurements and non-linear local operations. https://doi.org/10.1103/physreva.75.052105

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