A semiconductor source of triggered entangled photon pairs?

A. Gilchrist; K. J. Resch; A. G. White

doi:10.1038/nature05546

A semiconductor source of triggered entangled photon pairs?

Quantum Physics 2007-05-23 v2

Authors: 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.

Keywords

quantum entanglement quantum optics

Cite

@article{arxiv.quant-ph/0602018,
  title  = {A semiconductor source of triggered entangled photon pairs?},
  author = {A. Gilchrist and K. J. Resch and A. G. White},
  journal= {arXiv preprint arXiv:quant-ph/0602018},
  year   = {2007}
}

Comments

5 pages in pre-print format, 1 table

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