Trade-off relations between Bell nonlocality and local Kochen-Specker contextuality in generalized Bell scenarios

被引:0
作者
Porto, Lucas E. A. [1 ,2 ]
Ruffolo, Gabriel [1 ,3 ]
Rabelo, Rafael [1 ]
Cunha, Marcelo Terra [4 ]
Kurzynski, Pawel [3 ]
机构
[1] Univ Estadual Campinas Unicamp, Inst Fis Gleb Wataghin, Rua Sergio Buarque de Holanda 777, BR-13083859 Campinas, SP, Brazil
[2] Sorbonne Univ, CNRS, LIP6, F-75005 Paris, France
[3] Adam Mickiewicz Univ, Inst Spintron & Quantum Informat, Fac Phys, PL-61614 Poznan, Poland
[4] Univ Estadual Campinas Unicamp, Inst Matemat Estat & Comp Cient, Rua Sergio Buarque de Holanda 651, BR-13083859 Campinas, SP, Brazil
来源
NEW JOURNAL OF PHYSICS | 2024年 / 26卷 / 08期
基金
巴西圣保罗研究基金会;
关键词
contextuality; nonlocality; trade-off relations; nonclassicality; HIDDEN-VARIABLES; QUANTUM;
D O I
10.1088/1367-2630/ad7167
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The relations between Bell nonlocality and Kochen-Specker contextuality have been subject of research from many different perspectives in the last decades. Recently, some interesting results on these relations have been explored in the so-called generalized Bell scenarios, that is, scenarios where Bell spatial separation (or agency independence) coexist with (at least one of the) parties' ability to perform compatible measurements at each round of the experiment. When this party has an n-cycle compatiblity setup, it was first claimed that Bell nonlocality could not be concomitantly observed with contextuality at this party's local experiment. However, by a more natural reading of the definition of locality, it turns out that both Bell nonlocality and local contextuality can, in fact, be jointly present. In spite of it, in this work we prove that in the simplest of those scenarios there cannot be arbitrary amounts of both of these two resources together. That is, in these cases we show that the violation of any Bell inequality limits the possible violations of any local noncontextuality inequality. We also explore this trade-off relation using quantifiers of nonlocality and contextuality, discussing how such a relation can be understood in terms of a 'global' notion of contextuality, and we study possible extensions of this result to other scenarios.
引用
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页数:16
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