Experimentally faking the violation of Bell's inequalities
Ilja Gerhardt, Qin Liu, Antía Lamas-Linares, Johannes Skaar, Valerio Scarani, Vadim Makarov, Christian Kurtsiefer
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Abstract
Entanglement witnesses such as Bell inequalities are frequently used to prove the non-classicality 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.
arXiv comments
Added discussion of countermeasures, updated references. This version is published in Phys. Rev. Lett. 5 pages, 4 figures
Quantum cryptography is not unbreakable. See, for example: https://arxiv.org/pdf/1106.3224.pdf (Insert usual quote about the difference between theory and practice.)
Quantum cryptography is not unbreakable. See, for example: https://arxiv.org/pdf/1106.3224.pdf (Insert usual quote about the difference between theory and practice.)
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