4 August 2003 Demonstration of secure quantum key distribution
Author Affiliations +
We present results of experimental demonstration of secure Quantum Key Distribution (QKD) at Elsag spa based on the implementation of BB84 protocol using polarization entangled states produced in the nonlinear process of type-II spontaneous parametric down conversion (SPDC). This enables us to avoid the use of active polarization modulation components and increases the overall key distribution rate. The high quality of polarization-entangled state generated by parametric down conversion and the high efficiency of coupling entangled-photon pairs into a single-mode optical fiber has enabled us to perform QKD with quantum bit-error rate compatible with acceptable security levels. The complete software system architecture includes a QKD protocol implementing all phases of the key distillation process. The system runs in a server and two users configuration on three different PCs connected over a local area network (LAN). Friendly graphical user interfaces (GUI) are available to start and to monitor the whole key generation and distillation process.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fabio Antonio Bovino, Fabio Antonio Bovino, Pietro Varisco, Pietro Varisco, Anna Martinoli, Anna Martinoli, Paolo De Nicolo, Paolo De Nicolo, Sandra Bruzzo, Sandra Bruzzo, Anna Maria Colla, Anna Maria Colla, Giuseppe Castagnoli, Giuseppe Castagnoli, Giovanni Di Giuseppe, Giovanni Di Giuseppe, Alexander V. Sergienko, Alexander V. Sergienko, } "Demonstration of secure quantum key distribution", Proc. SPIE 5105, Quantum Information and Computation, (4 August 2003); doi: 10.1117/12.487942; https://doi.org/10.1117/12.487942


Quantum-key distribution with vector modes
Proceedings of SPIE (February 26 2017)
Hyperentanglement for advanced quantum communication
Proceedings of SPIE (September 04 2008)
Engineering quantum communication systems
Proceedings of SPIE (May 04 2012)
Hyperentangled states and free-space quantum cryptography
Proceedings of SPIE (December 08 2002)
Single-photon correlations for secure communication
Proceedings of SPIE (October 12 2006)

Back to Top