TY - JOUR AU - André Pereira Thé, George AU - Viana Ramos, Rubens PY - 2015/06/17 Y2 - 2024/03/29 TI - Detecção de Fotóns Isolados em 1550 nm: Simulação e Resultados Experimentais DOI: 10.14209/jcis.2003.19 JF - Journal of Communication and Information Systems JA - Journal of Communication and Information Systems VL - 18 IS - 3 SE - Regular Papers DO - UR - https://jcis.sbrt.org.br/jcis/article/view/266 SP - AB - <span>Quantum key distribution is a new technique that permits secure distribution of a bit string, used as key in cryptographic protocols. The security is guaranteed by suitable coding of the information in a quantum property and from the fact that a quantum cannot be both split and cloned. The present quantum-cryptographic protocols use a quantum (photon in optical systems) to carry the information. Hence, for the construction of an optical set up able to run quantum-cryptographic protocols, it is necessary use single-photon detectors. In this paper, numerical simulations and experimental results of single-photon detectors, in 1550 nm, using avalanche photodiode are shown.</span> ER -