| Autor: |
Tsuyoshi Nishioka, Mitsuru Matsui, Toshio Hasegawa, Shigeki Takeuchi, Toyohiro Tsurumaru, Keiji Sasaki, Alexandre Soujaeff |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference. |
| DOI: |
10.1109/cleoe-iqec.2007.4387003 |
| Popis: |
Despite technically successful experiments, most of current quantum key distribution (QKD) systems based on the original BB84 protocols are insecure. The reason is the usage of weak coherent pulses (WCP) as pseudo single photon source (SPS), which allows an eavesdropper to get full information on the key in presence of high optical losses on the transmission channel. To overcome this problem, we have developed a pulse heralded single photon source (HSPS), which we have used for QKD over 40 km of fiber. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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