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Biexcitons in coupled quantum dots as a source of entangled photons

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2002

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Gywat, Oliver
Loss, Daniel

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-91509
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https://doi.org/10.1103/PhysRevB.65.205329
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http://arxiv.org/abs/cond-mat/0109223

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Physical Review / B. 2002, 65, 205329. Available under: doi: 10.1103/PhysRevB.65.205329

Zusammenfassung

We study biexcitonic states in two tunnel-coupled semiconductor quantum dots and show that such systems provide the possibility to produce polarization-entangled photons or spin-entangled electrons that are spatially separated at production. We distinguish between the various spin configurations and calculate the low-energy biexciton spectrum using the Heitler-London approximation as a function of magnetic and electric fields. The oscillator strengths for the biexciton recombination involving the sequential emission of two photons are calculated. The entanglement of the polarizations resulting from the spin configuration in the biexciton states is quantified as a function of the photon emission angles.

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ISO 690GYWAT, Oliver, Guido BURKARD, Daniel LOSS, 2002. Biexcitons in coupled quantum dots as a source of entangled photons. In: Physical Review / B. 2002, 65, 205329. Available under: doi: 10.1103/PhysRevB.65.205329
BibTex
@article{Gywat2002Biexc-5169,
  year={2002},
  doi={10.1103/PhysRevB.65.205329},
  title={Biexcitons in coupled quantum dots as a source of entangled photons},
  volume={65},
  journal={Physical Review / B},
  author={Gywat, Oliver and Burkard, Guido and Loss, Daniel},
  note={Article Number: 205329}
}
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