Entanglement witnesses such as Bell inequalities are frequently used to prove the nonclassicality of a light source and its suitability for further tasks. By demonstrating Bell inequality violations using classical light in common experimental arrangements, we highlight why strict locality and efficiency conditions are not optional, particularly in security-related scenarios. © 2011 American Physical Society.
CITATION STYLE
Gerhardt, I., Liu, Q., Lamas-Linares, A., Skaar, J., Scarani, V., Makarov, V., & Kurtsiefer, C. (2011). Experimentally faking the violation of Bell’s inequalities. Physical Review Letters, 107(17). https://doi.org/10.1103/PhysRevLett.107.170404
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