Entanglement preparation using symmetric multiports

We investigate the entanglement produced by a multi-path interferometer that is composed of two symmetric multiports, with phase shifts applied to the output of the first multiport. Particular attention is paid to the case when we have a single photon entering the interferometer. For this situation...

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Bibliographic Details
Published in:arXiv.org 2010-10
Main Authors: Brougham, Thomas, Kost'ak, Vojtech, Jex, Igor, Andersson, Erika, Kiss, Tamas
Format: Article
Language:English
Subjects:
Entangled states
Entanglement
Quantum theory
Online Access:Get full text
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Description
Summary:We investigate the entanglement produced by a multi-path interferometer that is composed of two symmetric multiports, with phase shifts applied to the output of the first multiport. Particular attention is paid to the case when we have a single photon entering the interferometer. For this situation we derive a simple condition that characterize the types of entanglement that one can generate. We then show how one can use the results from the single photon case to determine what kinds of multi-photon entangled states one can prepare using the interferometer.
ISSN:2331-8422
DOI:10.48550/arxiv.1010.2367