Quantum algorithms for estimating quantum entropies
发布时间：2023-09-08点击次数：
- 发表刊物：Physical Review Applied
- 关键字：Quantum algorithm, quantum entropies
- 摘要：he von Neumann and quantum Rényi entropies characterize fundamental properties of quantum systems and lead to many theoretical and practical applications. Quantum algorithms using a purified quantum query model can speed up quantum entropy estimation, while little is known about the complexity of using identical copies of the quantum state. This paper presents quantum entropy estimation algorithms with a cost of copies scaling polynomially in the rank of the state. In contrast to current methods that depend on the dimension of the system, our methods could provide exponential resource savings in the scenario of low-rank states. Furthermore, we show how to construct quantum circuits using primitive single-qubit or two-qubit gates efficiently and thus provide practical methods for estimating quantum entropies of quantum systems. We also conduct simulation experiments to show the effectiveness and noise robustness of our algorithms.
- 论文类型：期刊论文
- 是否译文：否
- 发表时间：2023-04-14
- 收录刊物：SCI
- 发布刊物链接：https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.19.044041
+39
王友乐
个人信息
- 教师姓名： 王友乐
- 性别： 男
- 所在单位： 软件学院
- 学历： 博士研究生毕业
- 学位：工学博士学位
- 在职信息： 在岗
- 职称： 讲师（高校）
- 毕业院校：悉尼科技大学
曾获荣誉
- 江苏省应用技术学会青年科技奖
- 悉尼量子学院博士奖学金
- 2023 年中国物理学会 - MindSpore Quantum 学术奖励基金
其他联系方式
- 通讯/办公地址: 南信大临江楼A1108
- 移动电话: 18860848606
- 邮箱: youlew@foxmail.com
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