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A semiconductor source of triggered entangled photon pairs?

A. Gilchrist·K. J. Resch·A. G. White
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Abstract

The realisation of a triggered entangled photon source will be of great importance in quantum information, including for quantum key distribution and quantum computation. We show here that: 1) the source reported in ``A semiconductor source of triggered entangled photon pairs''[1. Stevenson et al., Nature 439, 179 (2006)]} is not entangled; 2) the entanglement indicators used in Ref. 1 are inappropriate, relying on assumptions invalidated by their own data; and 3) even after simulating subtraction of the significant quantity of background noise, their source has insignificant entanglement.

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A. Gilchrist, K. J. Resch, A. G. White. 2006-08-08. A semiconductor source of triggered entangled photon pairs?. https://doi.org/10.1038/nature05546

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