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- W4367000501 abstract "We present a technique for enhancing the estimation of quantum state properties by incorporating approximate prior knowledge about the quantum state of interest. This method involves performing randomized measurements on a quantum processor and comparing the results with those obtained from a classical computer that stores an approximation of the quantum state. We provide unbiased estimators for expectation values of multi-copy observables and present performance guarantees in terms of variance bounds which depend on the prior knowledge accuracy. We demonstrate the effectiveness of our approach through numerical experiments estimating polynomial approximations of the von Neumann entropy and quantum state fidelities." @default.
- W4367000501 created "2023-04-27" @default.
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- W4367000501 date "2023-04-24" @default.
- W4367000501 modified "2023-10-17" @default.
- W4367000501 title "Enhanced estimation of quantum properties with common randomized measurements" @default.
- W4367000501 doi "https://doi.org/10.48550/arxiv.2304.12292" @default.
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