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Entangled photon apparatus for the undergraduate laboratory

Dietrich Dehlinger·M. W. Mitchell
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Abstract

We present detailed instructions for constructing and operating an apparatus to produce and detect polarization-entangled photons. The source operates by type-I spontaneous parametric downconversion in a two-crystal geometry. Photons are detected in coincidence by single-photon counting modules and show strong angular and polarization correlations. We observe more than 100 entangled photon pairs per second. A test of a Bell inequality can be performed in an afternoon.

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Dietrich Dehlinger, M. W. Mitchell. 2002-05-27. Entangled photon apparatus for the undergraduate laboratory. https://doi.org/10.1119/1.1498859

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