Witnessing Quantum Incompatibility Structures in High-Dimensional Multimeasurement Systems

IF 8.1 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Xiaolin Zhang, Rui Qu, Zehong Chang, Yunlong Wang, Zhenyu Guo, Min An, Hong Gao, Fuli Li, Pei Zhang
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引用次数: 0

Abstract

Quantum incompatibility, referred as the phenomenon that some quantum measurements cannot be performed simultaneously, is necessary for various quantum information processing tasks, such as nonlocality and steering. When these applications come to high-dimensional multimeasurement scenarios, it is crucial and challenging to witness the incompatibility of measurements with complex structures. To address this problem, we propose a modified quantum state discrimination protocol that decomposes complex compatibility structures into pairwise ones and employs noise robustness to bound incompatibility structures. We then derive arithmetic bounds for arbitrary measurements and analytical bounds for mutually unbiased bases, and capture some quantum incompatibility structures where measurements are partly compatible and partly incompatible. Finally, we experimentally demonstrate our results and connect them with quantum steering, quantum simulability and quantum communications.
见证高维多测量系统中的量子不相容结构
量子不兼容性是指某些量子测量不能同时进行的现象,它是各种量子信息处理任务(如非局域性和转向)所必需的。当这些应用进入高维多测量场景时,如何见证具有复杂结构的测量的不兼容性就显得至关重要且极具挑战性。为了解决这个问题,我们提出了一种改进的量子态判别协议,它将复杂的不相容结构分解成成对结构,并利用噪声鲁棒性来约束不相容结构。然后,我们推导出任意测量的算术边界和互不偏倚基础的分析边界,并捕捉到一些测量部分兼容、部分不兼容的量子不兼容结构。最后,我们通过实验证明了我们的结果,并将它们与量子转向、量子可模拟性和量子通信联系起来。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Physical review letters
Physical review letters 物理-物理:综合
CiteScore
16.50
自引率
7.00%
发文量
2673
审稿时长
2.2 months
期刊介绍: Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks
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