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Free-Space Quantum Key Distribution

Optics 2016-11-14 v1 Quantum Physics

Abstract

Based on the firm laws of physics rather than unproven foundations of mathematical complexity, quantum cryptography provides a radically different solution for encryption and promises unconditional security. Quantum cryptography systems are typically built between two nodes connected to each other through fiber optic. This chapter focuses on quantum cryptography systems operating over free-space optical channels as a cost-effective and license-free alternative to fiber optic counterparts. It provides an overview of the different parts of an experimental free-space quantum communication link developed in the Spanish National Research Council (Madrid, Spain).

Keywords

Cite

@article{arxiv.1611.03529,
  title  = {Free-Space Quantum Key Distribution},
  author = {Alberto Carrasco-Casado and Verónica Fernández and Natalia Denisenko},
  journal= {arXiv preprint arXiv:1611.03529},
  year   = {2016}
}

Comments

22 pages, 15 figures

R2 v1 2026-06-22T16:48:53.925Z