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Classical Mechanism is Optimal in Classical-Quantum Differentially Private Mechanisms

2020 IEEE International Symposium on Information Theory (ISIT), 2020
Differential privacy (DP) is an influential privacy measure and has been studied to protect private data. DP has been often studied in classical probability theory, but few researchers studied quantum versions of DP. In this paper, we consider classical-quantum DP mechanisms which (i) convert binary private data to quantum states and (ii) satisfy a ...
Yuuya Yoshida, Masahito Hayashi
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