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arXiv · 0907.4654

Violation of Bell-like Inequality for spin-energy entanglement in neutron polarimetry

S. Sponar·J. Klepp·C. Zeiner·G. Badurek·Y. Hasegawa
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Abstract

Violation of a Bell-like inequality for a spin-energy entangled neutron state has been confirmed in a polarimetric experiment. The proposed inequality, in Clauser-Horne-Shimony-Holt (CHSH) formalism, relies on correlations between the spin and energy degree of freedom in a single-neutron system. The entangled states are generated utilizing a suitable combination of two radio-frequency fields in a neutron polarimeter setup. The correlation function S is determined to be 2.333+/-0.005, which violates the Bell-like CHSH inequality by more than 66 standard deviations.

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S. Sponar, J. Klepp, C. Zeiner, G. Badurek, Y. Hasegawa. 2009-07-27. Violation of Bell-like Inequality for spin-energy entanglement in neutron polarimetry. https://doi.org/10.1016/j.physleta.2009.11.017

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