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Phys Rev Lett. 2009 Jan 30;102(4):040401. Epub 2009 Jan 26.

Proposed bell experiment with genuine energy-time entanglement.

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Departamento de FĂ­sica Aplicada II, Universidad de Sevilla, E-41012 Sevilla, Spain.


Franson's Bell experiment with energy-time entanglement [Phys. Rev. Lett. 62, 2205 (1989)10.1103/PhysRevLett.62.2205] does not rule out all local hidden variable models. This defect can be exploited to compromise the security of Bell inequality-based quantum cryptography. We introduce a novel Bell experiment using genuine energy-time entanglement, based on a novel interferometer, which rules out all local hidden variable models. The scheme is feasible with actual technology.

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