Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/94972
Type: Artigo de periódico
Title: Channel Equalisation For Polarimetric Quantum Cryptographic Systems
Author: Ramos R.V.
Souza R.F.
Abstract: Quantum cryptography is a new technique, guaranteed by fundamental physics laws, used to distribute the bits of a key used in the encryption and decryption of messages. The early proposed systems used the photon's polarisation to encode the bits. However, when light propagates along the optical fiber, the light's polarisation changes randomly due to random variation of the fiber's birefringence. This fact imposes a limit in the fiber's length for systems using polarimetric quantum cryptography. Based in a quasi-stationary model, we propose an optical equaliser to recover the lost polarisation due to propagation in the optical fiber. The mathematics and simulations are presented.
Editor: 
Rights: fechado
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0035278143&partnerID=40&md5=5d0c80c58d4926bcc8163f93a67e5c34
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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