Quantum key distribution with realistic heralded single photon sources
arXiv:1211.4691 · doi:10.1142/S0219749913500342
Abstract
We analyze theoretically performance of four-state quantum key distribution protocols implemented with a realistic heralded single-photon source. The analysis assumes a noisy model for the detector heralding generation of individual photons via spontaneous parametric down-conversion, including dark counts and imperfect photon number resolution. We identify characteristics of the heralding detector that defines the attainable cryptographic key rate and the maximum secure distance. Approximate analytical formulas are applied to multiplexed detection and compared with results of numerical calculations.
16 pages, 6 figures, some references added, minor corrections
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Cited by in corpus (6)
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- Heralded single photon sources for QKD applications
- Sufficiency of quantum non-Gaussianity for discrete-variable quantum key distribution over noisy channel
- Single-photon emitters based on NIR colour centres in diamond coupled with solid immersion lenses
- Towards a standard procedure for the measurement of the multi-photon component in a CW telecom heralded single-photon source
- Towards joint reconstruction of noise and losses in quantum channels