Finite-size analysis of continuous-variable quantum key distribution with entanglement in the middle<xref rid="cpb_28_1_010305fn1" ref-type="fn">*</xref> <fn id="cpb_28_1_010305fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61572529, 61871407, and 61801522) and the China Postdoctoral Science Foundation (Grant Nos. 2013M542119 and 2014T70772).</p> </fn>

Finite-size analysis of continuous-variable quantum key distribution with entanglement in the middle* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 61572529, 61871407, and 61801522) and the China Postdoctoral Science Foundation (Grant Nos. 2013M542119 and 2014T70772).

Guo Ying^{1, 2}, Su Yu², Zhou Jian², Zhang Ling², Huang Duan^{2, †}

EM-based CVQKD protocol, where the entangled source is placed in the middle between Alice and Bob. Alice performs heterodyne detection to detect one half of the EPR state, while Bob exploits homodyne detection to measure the other half of the EPR state. The Gaussian attack on the links is performed by Eve using ancillas E₁ and E₂.