On the implementation of a deterministic secure coding protocol using polarization entangled photons

Details On the implementation of a deterministic secure coding protocol using polarization entangled photons On the implementation of a deterministic secure coding protocol using polarization entangled photons

2007-03-26

arxiv.org/abs/quant-ph/0703242v2

Optics Communications 281 4540 - 4544 (2008)

Physics

Quantum Physics

12 pages, 2 figures

Scientific paper

10.1016/j.optcom.2008.04.068

We demonstrate a prototype-implementation of deterministic information encoding for quantum key distribution (QKD) following the ping-pong coding protocol [K. Bostroem, T. Felbinger, Phys. Rev. Lett. 89 (2002) 187902-1]. Due to the deterministic nature of this protocol the need for post-processing the key is distinctly reduced compared to non-deterministic protocols. In the course of our implementation we analyze the practicability of the protocol and discuss some security aspects of information transfer in such a deterministic scheme.

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