Qianheng Duan

Using Variational Quantum Algorithm to Solve the LWE Problem

2022 · Entropy

The variational quantum algorithm (VQA) is a hybrid classical-quantum algorithm. It can actually run in an intermediate-scale quantum device where the number of available qubits is too limited to perform quantum error correction, so it …

Low-Depth Flagged Syndrome Extraction for Calderbank-Shor-Steane Codes of Distance 3

2024 · IEEE Transactions on Information Theory

In this work, we present a low-depth flagged syndrome extraction strategy for Calderbank-Shor-Steane (CSS) codes of distance 3. We demonstrate that if one stabilizer generator of a distance-3 CSS code measured using the flagged circuit …