8 papers · 1 filter
Maximal quantum leakage: operational interpretation and quantum channel analysis
Shuixin Xiao, Zijia Zhao, Jingge Zhu +1
Maximal quantum leakage quantifies privacy against adversaries with arbitrary intentions. In this work, we prove that computing this leakage is equivalent to minimum-error quantum…
Perturbation Analysis of Maximal Quantum Leakage
Zijia Zhao, Shuixin Xiao, Farhad Farokhi
Maximal quantum leakage (MQL) is a worst-case information leakage measure that quantifies an adversary's inference advantage gained from accessing quantum encoding of classical dat…
An Information-Theoretic Principle for Optimal Quantum Encoding: Tight Frames and Equiangular Ensembles
Farhad Farokhi, Shuixin Xiao
Optimal encoding of classical data for quantum-assisted statistical inference is investigated from an information-theoretic perspective. We prove that the accuracy of any quantum-c…
Precision and Privacy in Distributed Quantum Sensing: A Quantum Fisher Information Duality
Farhad Farokhi
We establish a quantum Fisher information (QFI) duality for distributed quantum sensor networks with local phase encoding. For any -qubit probe state, where denotes the numb…
Generalized collective quantum tomography: algorithm design, optimization, and validation
Shuixin Xiao, Yuanlong Wang, Zhibo Hou +6
Quantum tomography is a fundamental technique for characterizing, benchmarking, and verifying quantum states and devices. It plays a crucial role in advancing quantum technologies…
Sample Complexity Bounds for Scalar Parameter Estimation Under Quantum Differential Privacy
Farhad Farokhi
This paper presents tight upper and lower bounds for minimum number of samples (copies of a quantum state) required to attain a prescribed accuracy (measured by error variance) for…