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Demonstration of active routing of entanglement in a multi-user network
Stockholm University, Faculty of Science, Department of Physics. University of Vienna, Austria.
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2013 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 21, no 23, 29013-29024 p.Article in journal (Refereed) Published
Abstract [en]

We implement an entanglement distribution network based on wavelength-multiplexing and optical switching for quantum communication applications. Using a high-brightness source based on spontaneous parametric down-conversion in periodically-poled lithium niobate waveguides, we generate polarisation entangled photon pairs with a broad spectrum covering the telecom wavelengths around 1550 nm. The photon pairs have entanglement fidelities up to 99%, and are distributed via passive wavelength multiplexing in a static multi-user network. We furthermore demonstrate a possible network application in a scenario with a single centralised source dynamically allocating two-party entanglement to any pair of users by means of optical switches. The whole system, from the pump laser up to the receivers, is fibre and waveguide based, resulting in maximal stability, minimal losses and the advantage of readily integrable telecom components in the 1550 nm range.

Place, publisher, year, edition, pages
2013. Vol. 21, no 23, 29013-29024 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-98307DOI: 10.1364/OE.21.029013ISI: 000327494000147OAI: oai:DiVA.org:su-98307DiVA: diva2:683870
Note

AuthorCount:5;

Available from: 2014-01-07 Created: 2014-01-03 Last updated: 2017-12-06Bibliographically approved

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