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2015 | OriginalPaper | Chapter

9. Implementation of QTLC Systems

Author : Gianfranco Cariolaro

Published in: Quantum Communications

Publisher: Springer International Publishing

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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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previous chapter Quantum Communications Systems with Thermal Noise
next chapter Introduction to Quantum Information
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Metadata
Title
Implementation of QTLC Systems
Author
Gianfranco Cariolaro
Copyright Year
2015
Book
Quantum Communications

Print ISBN: 978-3-319-15599-9

Electronic ISBN: 978-3-319-15600-2

Copyright Year: 2015

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