Artículo
Experimental test of high-dimensional quantum contextuality based on contextuality concentration
Autor/es | Liu, Zheng-Hao
Meng, Hui-Xian Xu, Zhen-Peng Zhou, Jie Chen, Jing-Ling Xu, Jin-Shi Li, Chuan-Feng Guo, Guang-Can Cabello Quintero, Adán |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada II |
Fecha de publicación | 2023-06-13 |
Fecha de depósito | 2023-09-22 |
Publicado en |
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Resumen | Contextuality is a distinctive feature of quantum theory and a fundamental resource for quantum computation. However, existing examples of contextuality in high-dimensional systems lack the necessary robustness required ... Contextuality is a distinctive feature of quantum theory and a fundamental resource for quantum computation. However, existing examples of contextuality in high-dimensional systems lack the necessary robustness required in experiments. Here, we address this problem by identifying a family of noncontextuality inequalities whose maximum quantum violation grows with the dimension of the system. At first glance, this contextuality is the single-system version of multipartite Bell nonlocality taken to an extreme form. What is interesting is that the single-system version achieves the same degree of contextuality but uses a Hilbert space of lower dimension. That is, contextuality “concentrates” as the degree of contextuality per dimension increases. We show the practicality of this result by presenting an experimental test of contextuality in a seven-dimensional system. By simulating sequences of quantum ideal measurements with destructive measurements and repreparation in an all-optical setup, we report a violation of 68.7 standard deviations of the simplest case of the noncontextuality inequalities identified. Our results advance the investigation of high-dimensional contextuality, its connection to the Clifford algebra, and its role in quantum computation. |
Agencias financiadoras | National Natural Science Foundation of China Universidad de Sevilla |
Identificador del proyecto | 2021ZD0301400
61725504 11821404 U19A2075 WK2030000056 AHY060300 12275136 11875167 12075001 3072022TS2503 11901317 PID2020-113738 GB-I00 US-15097 PCI2019-111885-2 |
Cita | Liu, Z., Meng, H., Xu, Z., Zhou, J., Chen, J., Xu, J.,...,Cabello Quintero, A. (2023). Experimental test of high-dimensional quantum contextuality based on contextuality concentration. Physical Review Letters, 130 (240202). https://doi.org/10.1103/PhysRevLett.130.240202. |
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