Security of Differential Phase Shift Quantum Key Distribution
碩士 === 國立臺灣大學 === 物理學研究所 === 106 === In this thesis I discuss one of the quantum key distribution (QKD) protocols, the differential phase shift (DPS) protocol, which is designed mainly for the weak coherent state source, and is considered secure under photon number splitting attack. Starting from a...
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| Format: | Others |
| Language: | en_US |
| Published: |
2018
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| Online Access: | http://ndltd.ncl.edu.tw/handle/8hkctt |
| Summary: | 碩士 === 國立臺灣大學 === 物理學研究所 === 106 === In this thesis I discuss one of the quantum key distribution (QKD) protocols, the differential phase shift (DPS) protocol, which is designed mainly for the weak coherent state source, and is considered secure under photon number splitting attack. Starting from a brief introduction to the elements needed in the field of QKD, we reviewed the proof of single photon DPS based on Shor-Preskill approach and coherent state DPS based on complementarity approach. Then key rates for DPS QKD with various sources including single photon, parametric down-conversion and coherent state are calculated. Finally, a short conclusion is given and further development is proposed.
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