Zhi Ma

Practical attacks on decoy-state quantum-key-distribution systems with detector efficiency mismatch

2015 · Physical Review A

To the active-basis-choice decoy-state quantum-key-distribution systems with detector efficiency mismatch, we present a modified attack strategy, which is based on the faked states attack, with quantum nondemolition measurement ability to restress the threat of detector …

Real-Time Source-Independent Quantum Random Number Generator Based on a Cloud Superconducting Quantum Computer

2021 · Research Square

Abstract Quantum random number generator (QRNG) relies on the intrinsic randomness of quantum mechanics to produce true random numbers which are important in information processing tasks. Due to the presence of the superposition state, quantum …

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 …