3 papers
quant-ph2025
High-Precision Fidelity Estimation with Common Randomized Measurements
Zhongyi Yang, Datong Chen, Zihao Li +1
Efficient fidelity estimation of multiqubit quantum states is crucial to many applications in quantum information processing. However, to estimate the infidelity with multiplic…
quant-ph2025
Optimal Quantum Measurements with respect to the Fidelity
Datong Chen, Huangjun Zhu
Fidelity is the standard measure for quantifying the similarity between two quantum states. It is equal to the square of the minimum Bhattacharyya coefficient between the probabili…
quant-ph2024
Nonstabilizerness Enhances Thrifty Shadow Estimation
Datong Chen, Huangjun Zhu
Shadow estimation is a powerful approach for estimating the expectation values of many observables. Thrifty shadow estimation is a simple variant that is proposed to reduce the exp…