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A liquid crystal source of photon pairs - EurekAlert
Spontaneous parametric down-conversion (SPDC), as a source of entangled photons, is of great interest for quantum physics and quantum technology, but so far it could be only implemented in solids. Researchers at the Max Planck Institute for the Science of Light (MPL) and Jozef Stefan Institute in Ljubljana, Slovenia, have demonstrated, for the first time, SPDC in a liquid crystal. The results, recently published in Nature, open a path to a new generation of quantum sources: efficient and electric-field tunable.
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