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arXiv · 1210.0209

Optimal pair generation rate for Entanglement-based QKD

Catherine Holloway·John A. Doucette·Christopher Erven·Jean-Philippe Bourgoin·Thomas Jennewein
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Abstract

In entanglement-based quantum key distribution (QKD), the generation and detection of multi-photon modes leads to a trade-off between entanglement visibility and two-fold coincidence events when maximizing the secure key rate (SKR). We produce a predictive model for the optimal two-fold coincidence probability per coincidence window given the channel efficiency and detector dark count rate of a given system. This model is experimentally validated and used in simulations for QKD with satellites as well as optical fibers.

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Catherine Holloway, John A. Doucette, Christopher Erven, Jean-Philippe Bourgoin, Thomas Jennewein. 2012-09-30. Optimal pair generation rate for Entanglement-based QKD. https://doi.org/10.1103/physreva.87.022342

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