UNIGE document Scientific Article
previous document  unige:37036  next document
add to browser collection
Title

Experimental entanglement distillation and ‘hidden’ non-locality

Authors
Kwiat, Paul G.
Barraza-Lopez, Salvador
Published in Nature. 2001, vol. 409, no. 6823, p. 1014-1017
Abstract Entangled states are central to quantum information processing, including quantum teleportation, efficient quantum computation and quantum cryptography. In general, these applications work best with pure, maximally entangled quantum states. However, owing to dissipation and decoherence, practically available states are likely to be non-maximally entangled, partially mixed (that is, not pure), or both. To counter this problem, various schemes of entanglement distillation, state purification and concentration have been proposed. Here we demonstrate experimentally the distillation of maximally entangled states from non-maximally entangled inputs. Using partial polarizers, we perform a filtering process to maximize the entanglement of pure polarization-entangled photon pairs generated by spontaneous parametric down-conversion. We have also applied our methods to initial states that are partially mixed. After filtering, the distilled states demonstrate certain non-local correlations, as evidenced by their violation of a form of Bell's inequality, Because the initial states do not have this property, they can be said to possess 'hidden' non-locality.
Identifiers
Full text
Article (Published version) (352 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://www.nature.com/doifinder/10.1038/35059017
Structures
Citation
(ISO format)
KWIAT, Paul G. et al. Experimental entanglement distillation and ‘hidden’ non-locality. In: Nature, 2001, vol. 409, n° 6823, p. 1014-1017. https://archive-ouverte.unige.ch/unige:37036

263 hits

0 download

Update

Deposited on : 2014-06-02

Export document
Format :
Citation style :