Non-Poissonian statistics from Poissonian light sources with application to passive decoy state quantum key distribution

2009/09/30 by Marcos Curty, Tobias Moroder, Xiongfeng Ma +1 · 2 citations
Computer Science · Mathematics · Physics and Astronomy · #Coherent states #Computer science #Distribution (mathematics) #Key (lock) #Mathematical analysis #Mathematics #Photon #Photon statistics #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum key distribution #Quantum mechanics #Quantum optics #Quantum optics and atomic interactions #SIGNAL (programming language) #Statistical physics #quant-ph

paper · pdf · doi:10.1364/ol.34.003238

published as Opt. Lett. 34, 3238 (2009) · 7 pages, 3 figures, accepted for publication in Opt. Lett

arxiv created 2009/09/30 · openalex publication_date 2009/10/14 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose a method to prepare different non-Poissonian signal pulses from sources of Poissonian photon number distribution, using only linear optical elements and threshold photon detectors. This method allows a simple passive preparation of decoy states for quantum key distribution. We show that the resulting key rates are comparable with the performance of active choices of intensities of Poissonian signals.

Citations

• Simple and Efficient Quantum Key Distribution with Parametric Down-Conversion
• Quantum key distribution with passive decoy state selection
• Quantum key distribution over 122 km of standard telecom fiber
• Quantum Key Distribution with High Loss: Toward Global Secure Communication
• Practical Decoy State for Quantum Key Distribution

Cited by

• Boosting up quantum key distribution by learning statistics of practical single-photon sources
• Twin-field quantum key distribution with passive-decoy state