Quantum Information Processing

, Volume 14, Issue 6, pp 2111–2124 | Cite as

Two-layer quantum key distribution

  • Paulo Vinícius Pereira Pinheiro
  • Rubens Viana Ramos


Recently a new quantum key distribution protocol using coherent and thermal states was proposed. In this work, this kind of two-layer QKD protocol is formalized and its security against the most common attacks, including external control and Trojan horse attacks, is discussed.


Quantum key distribution Security analysis Coherent and thermal states 



This work was supported by the Brazilian agencies CNPq via Grant No. 303514/2008-6. Also, this work was performed as part of the Brazilian National Institute of Science and Technology for Quantum Information.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Paulo Vinícius Pereira Pinheiro
    • 1
  • Rubens Viana Ramos
    • 1
  1. 1.Laboratory of Quantum Information Technology, Department of Teleinformatic EngineeringFederal University of CearaFortalezaBrazil

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