Detector-device-independent quantum key distribution: Security analysis and fast implementation
| Autor: | Gianluca Boso, Raphael Houlmann, Charles Ci Wen Lim, Alberto Boaron, Boris Korzh, Anthony Martin, Hugo Zbinden |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Security analysis
Computer science business.industry Detector General Physics and Astronomy 02 engineering and technology Quantum entanglement ddc:500.2 Quantum key distribution 021001 nanoscience & nanotechnology 01 natural sciences 0103 physical sciences 010306 general physics 0210 nano-technology business Protocol (object-oriented programming) Key exchange Computer network Communication channel |
| Zdroj: | Journal of Applied Physics, Vol. 120, No 6 (2016) P. 063101 |
| ISSN: | 0021-8979 |
| Popis: | One of the most pressing issues in quantum key distribution (QKD) is the problem of detector side- channel attacks. To overcome this problem, researchers proposed an elegant "time-reversal" QKD protocol called measurement-device-independent QKD (MDI-QKD), which is based on time-reversed entanglement swapping. However, MDI-QKD is more challenging to implement than standard point- to-point QKD. Recently, an intermediary QKD protocol called detector-device-independent QKD (DDI-QKD) has been proposed to overcome the drawbacks of MDI-QKD, with the hope that it would eventually lead to a more efficient detector side-channel-free QKD system. Here, we analyze the security of DDI-QKD and elucidate its security assumptions. We find that DDI-QKD is not equivalent to MDI-QKD, but its security can be demonstrated with reasonable assumptions. On the more practical side, we consider the feasibility of DDI-QKD and present a fast experimental demonstration (clocked at 625 MHz), capable of secret key exchange up to more than 90 km. |
| Databáze: | OpenAIRE |
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