# Covariance Matrix Preparation for Quantum Principal Component Analysis

> Research article (PRX Quantum, 2022) · cited 26× · AI/ML

**Wikidata**: [openalex:W4295013935](https://www.wikidata.org/wiki/openalex:W4295013935)  
**Source**: https://4ort.xyz/entity/covariance-matrix-preparation-for-quantum-principal-component-analysis