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Weak-pulse implementation of SARG04 quantum cryptography protocol in free space

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4 Author(s)
Youn-Chang Jeong ; Dept. of Phys., Pohang Univ. of Sci. & Technol., Pohang ; Kwan-Young Hong ; Yong-Su Kim ; Yoon-Ho Kim

We report a weak-pulse implementation of SARG04 quantum cryptography protocol in free-space. The shifted key generation rate of 22 k bit per second and quantum bit error rate of 4% have been demonstrated. We have also studied the long-distance capability of the QKD system by adding optical losses to the quantum channel.

Published in:

Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on

Date of Conference:

4-9 May 2008