CHSH Bell Inequality of Frequency-Bin Entanglement (IMAGE)

Hong Kong University of Science and Technology

CHSH Bell Inequality of Frequency-Bin Entanglement

Caption

(a) ?S as a function of a two-photon relative time delay of ?τ. The circles are experimental data. The solid curve is predicted by the theory. The dashed envelopes are plotted from ±22????(?)±22V(τ), where the visibility ?(?)V(τ) is determined by Eq. (4). The shadow area is the classical regime where |?|?2|S|?2. Panels (b)-(e) show the measured Bell correlations. The phase settings are Δ??=0Δ?s=0, Δ???=?/4Δ?as=π/4, Δ???=??/2Δ?s?=?π/2, and Δ????=??/4Δ?as?=?π/4.

Credit

Physics Department, HKUST

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