Improving long-distance distribution of entangled coherent state with the method of twin-field quantum key distribution
ShengLi Zhang · Optics Express · 2019
(α = 2.0)〉 and the fixed fidelity (F) ranges from 0.99 to 0.75. The performance of our scheme in the presence of realistic on-off photon detector has also been investigated. Our work provides the application of TFQKD method toward continuous variable entanglement distribution and we believe that its application to other quantum information processing protocols are worth investigation in the near future.