Four Photon Entanglement from Down Conversion

Harald Weinfurter; Marek Zukowski

doi:10.1103/PhysRevA.64.010102

Four Photon Entanglement from Down Conversion

Quantum Physics 2009-11-07 v1

Authors: Harald Weinfurter , Marek Zukowski

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Abstract

Double-pair emission from type-II parametric down conversion results in a highly entangled 4-photon state. Due to interference, which is similar to bunching from thermal emission, this state is not simply a product of two pairs. The observation of this state can be achieved by splitting the two emission modes at beam splitters and subsequent detection of a photon in each output. Here we describe the features of this state and give a Bell theorem for a 4-photon test of local realistic hidden variable theories.

Keywords

quantum entanglement spontaneous parametric down-conversion quantum optics

Cite

@article{arxiv.quant-ph/0103049,
  title  = {Four Photon Entanglement from Down Conversion},
  author = {Harald Weinfurter and Marek Zukowski},
  journal= {arXiv preprint arXiv:quant-ph/0103049},
  year   = {2009}
}

Comments

5 pages, 1 figure, submitted to PRA

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