Produção Nacional
Experimental investigation of quantum key distribution with position and momentum of photon pairs
2005; American Physical Society; Volume: 72; Issue: 2 Linguagem: Inglês
10.1103/physreva.72.022313
ISSN1538-4446
AutoresM. P. Almeida, S. P. Walborn, P. H. Souto Ribeiro,
Tópico(s)Quantum Computing Algorithms and Architecture
ResumoWe investigate the utility of Einstein-Podolsky-Rosen correlations of the position and momentum of photon pairs from parametric down-conversion in the implementation of a secure quantum key distribution protocol. We show that security is guaranteed by the entanglement between downconverted pairs, and can be checked by either direct comparison of Alice and Bob's measurement results or evaluation of an inequality of the sort proposed by Mancini et al. (Phys. Rev. Lett. 88, 120401 (2002)).
Referência(s)