Implementation of two-way free space quantum key distribution
We report an implementation of a two-way, four-state quantum key distribution (QKD) protocol (namely, the LM05 protocol) over a free space medium. A stable quantum bit error rate of 3.34% and maximum tolerable channel loss for secure key generation of 5.68 dB in the absence of a photon number splitt...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SPIE
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/26447/ http://irep.iium.edu.my/26447/ http://irep.iium.edu.my/26447/ http://irep.iium.edu.my/26447/1/Implementation_of_two-way_free_space_quantum_key_distribution.pdf |
| Summary: | We report an implementation of a two-way, four-state quantum key distribution (QKD) protocol (namely, the LM05 protocol) over a free space medium. A stable quantum bit error rate of 3.34% and maximum tolerable channel loss for secure key generation of 5.68 dB in the absence of a photon number splitting attack were recorded. The result strongly indicates the feasibility of a two-way QKD protocol implementation over a free space medium. |
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