Heralded single photon sources for QKD applications

Abstract

Single photon sources (SPS) are a fundamental building block for optical implementations of quantum information protocols. Among SPSs, multiple crystal heralded single photon sources seem to give the best compromise between high pair production rate and low multiple photon events. In this work, we study their performance in a practical quantum key distribution experiment, by evaluating the achievable key rates. The analysis focuses on the two different schemes, symmetric and asymmetric, proposed for the practical implementation of heralded single photon sources, with attention on the performance of their composing elements. The analysis is based on the protocol proposed by Bennett and Brassard in 1984 and on its improvement exploiting decoy state technique. Finally, a simple way of exploiting the post-selection mechanism for a passive, one decoy state scheme is evaluated.

11 pages

References in corpus (6)

• Simple and efficient quantum key distribution with parametric down-conversion
• Hybrid photonic circuit for multiplexed heralded single photons
• Effect of Loss on Multiplexed Single-Photon Sources
• Asymmetric Architecture for Heralded Single Photon Sources
• On-chip generation and guiding of quantum light from a site-controlled quantum dot
• Quantum key distribution with realistic heralded single photon sources

Cited by in corpus (8)

• Experimental investigation of high-dimensional quantum key distribution protocols with twisted photons
• Self-healing high-dimensional quantum key distribution using hybrid spin-orbit Bessel states
• Algebraic approach to electro-optic modulation of light: Exactly solvable multimode quantum model
• Performance of a temporally multiplexed single-photon source with imperfect devices
• The optical properties of dibenzoterrylene
• Quantum Light on Demand
• Low-noise heralded single photons from cascaded downconversion
• Reduced State Embedding for Error Correction in Quantum Cryptography