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arXiv 1709.09772quant-phmath.CTmath.QA
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绝对量子动力学

Categorical Quantum Dynamics

Stefano Gogioso

摘要:

我们使用强互补性在CQM框架内引入动力学和对称性,我们还将其扩展到无限维可分希尔伯特空间:这些是长期缺失的特征,为丰富的新应用开辟了道路。在这项工作中提出的相干处理也提供了各种新的见解的动力学和对称性的量子系统:例子包括非常简单的特征的可观测的对偶性,连接的强互补性与Weyl正则交换关系,概括的费曼的时钟建设,存在的时间可观和量子时钟的出现。此外,我们表明,强互补性是量子算法和协议的一个关键资源。我们提供了第一个完全图解的,理论独立的量子算法解决隐藏子群问题的正确性证明,并表明,强互补性的特点提供了量子优势。在量子基础中,我们使用强互补性来推导出非局部性与相群结构相关的确切条件,在Mermin型非局部性参数的背景下。我们的非局部性的结果找到进一步的应用量子密码学,在那里我们用它们来定义一个量子经典的秘密共享方案与可证明的设备无关的安全保证。总而言之,我们认为强互补性是量子理论及其应用的一个真正强大和通用的基石,并且应该在未来引起更多的关注。

英文摘要:

We use strong complementarity to introduce dynamics and symmetries within the framework of CQM, which we also extend to infinite-dimensional separable Hilbert spaces: these were long-missing features, which open the way to a wealth of new applications. The coherent treatment presented in this work also provides a variety of novel insights into the dynamics and symmetries of quantum systems: examples include the extremely simple characterisation of symmetry-observable duality, the connection of strong complementarity with the Weyl Canonical Commutation Relations, the generalisations of Feynman's clock construction, the existence of time observables and the emergence of quantum clocks. Furthermore, we show that strong complementarity is a key resource for quantum algorithms and protocols. We provide the first fully diagrammatic, theory-independent proof of correctness for the quantum algorithm solving the Hidden Subgroup Problem, and show that strong complementarity is the feature providing the quantum advantage. In quantum foundations, we use strong complementarity to derive the exact conditions relating non-locality to the structure of phase groups, within the context of Mermin-type non-locality arguments. Our non-locality results find further application to quantum cryptography, where we use them to define a quantum-classical secret sharing scheme with provable device-independent security guarantees. All in all, we argue that strong complementarity is a truly powerful and versatile building block for quantum theory and its applications, and one that should draw a lot more attention in the future.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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