Experimental demonstration of fully passive quantum key distribution
- URL: http://arxiv.org/abs/2304.11655v2
- Date: Mon, 7 Aug 2023 14:24:05 GMT
- Title: Experimental demonstration of fully passive quantum key distribution
- Authors: Feng-Yu Lu, Ze-Hao Wang, V\'ictor Zapatero, Jia-Lin Chen, Shuang Wang,
Zhen-Qiang Yin, Marcos Curty, De-Yong He, Rong Wang, Wei Chen, Guan-Jie
Fan-Yuan, Guang-Can Guo, Zheng-Fu Han
- Abstract summary: We present a fully passive time-bin encoding QKD system and report on the successful implementation of a modulator-free QKD link.
Our prototype is capable of delivering competitive secret key rates in the finite key regime.
- Score: 20.362422771215062
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The passive approach to quantum key distribution (QKD) consists of removing
all active modulation from the users' devices, a highly desirable
countermeasure to get rid of modulator side-channels. Nevertheless, active
modulation has not been completely removed in QKD systems so far, due to both
theoretical and practical limitations. In this work, we present a fully passive
time-bin encoding QKD system and report on the successful implementation of a
modulator-free QKD link. According to the latest theoretical analysis, our
prototype is capable of delivering competitive secret key rates in the finite
key regime.
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