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arXiv · 1108.3411

Implementation of Two Way Free Space Quantum Key Distribution

M. F. Abdul Khir·M. N. Mohd Zain·Suryadi·S. Saharudin·S. Shaari
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Abstract

We report an implementation over free space medium of a two way four states quantum key distribution (QKD) protocol namely the LM05. The fully automated setup demonstrated a secure key generation rate of 3.54 kbits per second and quantum bit error rate (QBER) of 3.34% at mean photon number ({\mu}) = 0.15. The maximum tolerable channel loss for secure key generation considering Photon Number Splitting (PNS) attack, was 5.68 [dB]. The result successfully demonstrated the feasibility of a two way QKD protocol implementation over free space medium.

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M. F. Abdul Khir, M. N. Mohd Zain, Suryadi, S. Saharudin, S. Shaari. 2011-08-17. Implementation of Two Way Free Space Quantum Key Distribution. https://arxiv.org/abs/1108.3411

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