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New Sketch Tomography Method Enhances Quantum State Estimation

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Researchers have developed a new quantum state tomography procedure called Sketch Tomography, which hybridizes the classical shadow protocol with Matrix Product States (MPS). This method estimates the tensor components of a quantum state's density matrix by performing observable estimations. The procedure is proven to converge and its sample complexity scales quadratically with system size, offering more accurate estimations for moderately large subsystems compared to the standard classical shadow protocol and maximum likelihood estimation. AI

RANK_REASON This is a research paper detailing a new method for quantum state tomography. [lever_c_demoted from research: ic=1 ai=0.1]

Read on arXiv stat.ML →

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New Sketch Tomography Method Enhances Quantum State Estimation

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COVERAGE [1]

  1. arXiv stat.ML TIER_1 English(EN) · Xun Tang, Haoxuan Chen, Yuehaw Khoo, Lexing Ying ·

    Sketch Tomography: Hybridizing Classical Shadow and Matrix Product State

    arXiv:2512.03333v2 Announce Type: replace-cross Abstract: We introduce Sketch Tomography, an efficient procedure for quantum state tomography based on the classical shadow protocol used for quantum observable estimations. The procedure applies to the case where the ground truth q…

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