Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

S. Sauge; M. Swillo; S. Albert-Seifried; G. B. Xavier; J. Waldeback; M. Tengner; D. Ljunggren; A. Karlsson

doi:10.1364/OE.15.006926

Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

Quantum Physics 2009-11-13 v3

Authors: S. Sauge , M. Swillo , S. Albert-Seifried , G. B. Xavier , J. Waldeback , M. Tengner , D. Ljunggren , A. Karlsson

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Abstract

We present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm at a maximum rate of 1.2 10^6 s-1 THz-1 mW-1 after coupling to single-mode fiber. The quantum channel at 1555 nm and the synchronization signal gating the single photon detector are multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This implementation makes quantum communication applications compatible with current high-speed optical networks.

Keywords

entangled photon pairs polarization entanglement wavelength division multiplexing quantum communication qubit network

Cite

@article{arxiv.quant-ph/0703253,
  title  = {Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks},
  author = {S. Sauge and M. Swillo and S. Albert-Seifried and G. B. Xavier and J. Waldeback and M. Tengner and D. Ljunggren and A. Karlsson},
  journal= {arXiv preprint arXiv:quant-ph/0703253},
  year   = {2009}
}

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8 pages, 4 figures

Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

Abstract

Keywords

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