Chen He

An Exact Quantum Principal Component Analysis Algorithm Based on Quantum Singular Value Threshold

2020 · arXiv (Cornell University)

Quantum principal component analysis (qPCA) is the quantum version of principal component analysis (PCA). In this paper, based on the quantum singular value threshold (qSVT), we propose an exact quantum principal component analysis algorithm, which …

Practical security analysis of continuous-variable quantum key distribution with an unbalanced heterodyne detector

2021 · Chinese Physics B

When developing a practical continuous-variable quantum key distribution (CVQKD), the detector is necessary at the receiver’s side. We investigate the practical security of the CVQKD system with an unbalanced heterodyne detector. The results show that …