Johannes Skaar, Juan Carlos Garcia Escartin, and Harald Landro, "Quantum mechanical description of linear optics," American Journal of Physics 72, 1385-1391 (2004).
Abstract
Linear optical networks with any number of modes are described quantum mechanically.
We reformulate the conventional formal description based on input-output operator relations and obtain
an intuitive description based on the possible paths taken by the photons. The effect of a linear
optical network on localized photons is treated within the same formalism. The potential and
limitations of linear optics for application in quantum information processing are briefly discussed.
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About
This paper is partly based on the results of
Juan Carlos Garcia Escartin's master thesis "Linear optics implementation of quantum computers"
and Harald Landro's course project "A quantum optical analysis of optical delay-line circuits".
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