English(EN) Tight Lower Bounds for State Tomography with Limited Entanglement

量子物理研究为量子态层析成像确立了紧下界

作者 PulseAugur 编辑部 · [1 个来源] · 2026-09-10 04:00

研究人员为量子态层析成像（一种用于确定量子态性质的量子物理过程）确立了紧下界。这些新界限适用于测量仅限于少量量子副本且在块之间不保留记忆的情况，与现有的上界相匹配。这项工作消除了先前对使用副本数量的限制，并且即使在某些量子态的邻域中也适用。 AI

排序理由学术论文发表在arXiv上，详细介绍了量子物理领域的理论研究。[lever_c_demoted from research: ic=1 ai=0.1]

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Newsworthiness bucket: Tool; 学术论文发表在arXiv上，详细介绍了量子物理领域的理论研究。[lever_c_demoted from research: ic=1 ai=0.1]
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arXiv cs.LG TIER_1 English(EN) · Ufuk Keskin, Jason Luo, Mahbod Majid, Matthew Radzihovsky · 2026-09-10 04:00

有限纠缠下的量子态层析成像的严格下界

arXiv:2609.05718v1 Announce Type: cross Abstract: We study state tomography when each measurement acts on at most $k$ fresh copies and no quantum memory is retained between blocks. We prove a lower bound matching the upper bound in [arXiv:2510.07788]. Thus the copy complexity of …