Simple Error Scattering Model for improved Information Reconciliation

Details Simple Error Scattering Model for improved Information Reconciliation Simple Error Scattering Model for improved Information Reconciliation

2009-08-14

arxiv.org/abs/0908.2069v1

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10 pages, 3 figures

Scientific paper

Implementations of quantum key distribution as available nowadays suffer from inefficiencies due to post processing of the raw key that severely cuts down the final secure key rate. We present a simple model for the error scattering across the raw key and derive "closed form" expressions for the probability of a parity check failure, or experiencing more than some fixed number of errors. Our results can serve for improvement for key establishment, as information reconciliation via interactive error correction and privacy amplification rests on mostly unproven assumptions. We support those hypotheses on statistical grounds.

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