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Quantum Communications pp 421–447Cite as

Implementation of QTLC Systems

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Part of the book series: Signals and Communication Technology ((SCT))

Abstract

Quantum Communications systems for the transmission of classical information are implemented at optical frequencies. The chapter begins by describing the main optical components, such as lasers, bemsplitters, optical modulators, and photodetectors. The implementation of transmitters and of the physical media (free space and fiber optics) do not differ substantially from their classical version. The difference is concentrated in the quantum receivers, where the extraction of information is based on quantum measurements. The chapter deals mainly with the implementation of quantum binary receivers, which have a long story, starting from Kennedy’s receiver proposed in 1973 and going on with its improvements as Dolinar’s receiver and Sasaki-Hirota’s receivers. Here the target is to reach Helstrom’s bound. The chapter concludes with some recent ideas on the implementation of quantum multilevel receivers.

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Authors and Affiliations

  1. Department of Information Engineering, University of Padova, Padova, Italy

    Gianfranco Cariolaro

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  1. Gianfranco Cariolaro
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Correspondence to Gianfranco Cariolaro .

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Cariolaro, G. (2015). Implementation of QTLC Systems. In: Quantum Communications. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-15600-2_9

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  • DOI: https://doi.org/10.1007/978-3-319-15600-2_9

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-15599-9

  • Online ISBN: 978-3-319-15600-2

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