3 papers
quant-ph2026
Unifying Charge-Learnability Transitions in U(1)-Symmetric Quantum Circuits through Informational Power of Local Measurement
Yi-Fan Gong, Dan-Bo Zhang
Charge-learnability transitions in monitored symmetric quantum circuits reveal how local measurement records acquire sufficient information to infer a conserved charge. Here we ext…
quant-ph2025
Public-Key Quantum Authentication and Digital Signature Schemes Based on the QMA-Complete Problem
Le-Ran Liu, Min-Quan He, Dan-Bo Zhang +1
We propose a quantum authentication and digital signature protocol whose security is founded on the Quantum Merlin Arthur~(QMA)-completeness of the consistency of local density mat…
quant-ph2024
Quantum coupon collector with mixed-state encoding
Jing-Peng Zhang, Min-Quan He, Dan-Bo Zhang
The coupon collector is a prototypical model for evaluating the number of samples for identifying a set. By superposing all elements in the set as a pure quantum state, a quantum v…