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Multi-Photon Quantum Information Science and Technology in Integrated Optics pp 41–50Cite as

Multi Directional-Coupler Circuit for Quantum Logic

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Abstract

The previous chapter discussed quantum interference using waveguide directional couplers as an integrated version of a beam splitter. The beam splitter is one of the building blocks of any quantum optical technology, including linear optical quantum computing. In this chapter, we discuss the use of multiple directional couplers to create quantum optical logic. Specifically we demonstrate the use of two such coupler based logic gates in a single Silica-on-Silicon waveguide chip (see Sect. 2.4.2) to realise a proof of principle demonstration of a subroutine of Shor’s quantum factoring algorithm to factorize 15.

Some of the results reported in this chapter and an abbreviated discussion thereof were published as Ref. [1]

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Authors and Affiliations

  1. Centre for Quantum Photonics, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK

    Jonathan C. F. Matthews

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  1. Jonathan C. F. Matthews
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Correspondence to Jonathan C. F. Matthews .

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Matthews, J.C.F. (2013). Multi Directional-Coupler Circuit for Quantum Logic. In: Multi-Photon Quantum Information Science and Technology in Integrated Optics. Springer Theses. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32870-1_4

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  • DOI: https://doi.org/10.1007/978-3-642-32870-1_4

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  • Print ISBN: 978-3-642-32869-5

  • Online ISBN: 978-3-642-32870-1

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