Cryptology ePrint Archive: BibTeX Citation of Report 2014/146

@misc{cryptoeprint:2014:146,
    author = {Geraldo A. Barbosa and Jeroen van de Graaf},
    title = {Untappable communication channels over optical fibers from quantum-optical noise},
    howpublished = {Cryptology ePrint Archive, Report 2014/146},
    year = {2014},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.