Continuous variable quantum key distribution based on optical entangled states without signal modulation
Quantum Physics
2015-05-30 v1
Abstract
In this paper, we present the first experimental demonstration on continuous variable quantum key distribution using determinant Einstein-Podolsky-Rosen entangled states of optical field. By means of the instantaneous measurements of the quantum fluctuations of optical modes respectively distributed at sender and receiver, the random bits of secret key are obtained without the need for signal modulation. The post-selection boundaries for the presented entanglement-based scheme against both Gaussian collective and individual attacks are theoretically concluded. The final secret key rates of 84 kbits/s and 3 kbits/s are completed under the collective attack for the transmission efficiency of 80% and 40%, respectively.
Cite
@article{arxiv.1109.2495,
title = {Continuous variable quantum key distribution based on optical entangled states without signal modulation},
author = {Xiaolong Su and Wenzhe Wang and Yu Wang and Xiaojun Jia and Changde Xie and Kunchi Peng},
journal= {arXiv preprint arXiv:1109.2495},
year = {2015}
}