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皇冠428428娱乐娱城:Quantum differential privacy under noise channels

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题目:

Quantum differential privacy under noise channels

作者:费少明 研究员 (通讯作者)

简介:

Quantum differential privacy is a way to protect privacy in quantum computing. It perturbs the final
state of quantum computing by a specific quantum noise channel and makes the output useless to the
attackers, so as to achieve privacy protection. In this paper, we study the quantum differential privacy
under three channels: bit flip channel, phase flip channel and depolarizing channel.Wecalculate the
privacy parameters for these three channels based on the proportional distance.Weshow the privacy
protection capability by calculating the decay rates of the trace distances of two arbitrary quantum
states before and after passing through the channels. Under the same privacy budget, we compare the
fidelities, the trace distances between the real outputs and the outputs after entering the channels, and
analyze the privacy protection performance of different quantum channels in detail.
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