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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 29013–29024

Demonstration of active routing of entanglement in a multi-user network

I. Herbauts, B. Blauensteiner, A. Poppe, T. Jennewein, and H. Hübel  »View Author Affiliations

Optics Express, Vol. 21, Issue 23, pp. 29013-29024 (2013)

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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.

© 2013 OSA

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(060.4265) Fiber optics and optical communications : Networks, wavelength routing
(060.5565) Fiber optics and optical communications : Quantum communications
(270.5568) Quantum optics : Quantum cryptography

ToC Category:
Quantum Optics

Original Manuscript: August 15, 2013
Revised Manuscript: September 20, 2013
Manuscript Accepted: September 21, 2013
Published: November 15, 2013

I. Herbauts, B. Blauensteiner, A. Poppe, T. Jennewein, and H. Hübel, "Demonstration of active routing of entanglement in a multi-user network," Opt. Express 21, 29013-29024 (2013)

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