Quantum Nonlocality under Latency Constraints
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909878353657856 |
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| author | Ding, Dawei Ji, Zhengfeng Pocreau, Pierre Xu, Mingze Xu, Xinyu |
| author_facet | Ding, Dawei Ji, Zhengfeng Pocreau, Pierre Xu, Mingze Xu, Xinyu |
| contents | Bell inequality violation is the phenomenon where multiple non-communicating parties can exhibit correlations using quantum resources that are impossible if they can only use classical resources. One way to enforce non-communication is to apply a latency constraint: the parties must all produce outputs after they receive their inputs within a time window shorter than the speed of light delay between any pair of parties. If this latency constraint is relaxed so that a subset of the parties can communicate, we can obtain a new set of inequalities on correlations that extends Bell inequalities in a very natural way. Moreover, with this relaxed latency constraint, we can also have quantum communication between a subset of parties and thereby achieve possible quantum violations of these new inequalities. We ultimately wish to answer the fundamental question: "What are the physically realizable correlations between multiple parties under varying latency constraints?" To answer this question, we introduce latency-constrained games, a mathematical framework that extends nonlocal games to the setting where a subset of parties can communicate. The notion of latency-constrained games can have real-world applications, including high frequency trading, distributed computing, computer architecture, and distributed control systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_26349 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum Nonlocality under Latency Constraints Ding, Dawei Ji, Zhengfeng Pocreau, Pierre Xu, Mingze Xu, Xinyu Quantum Physics Bell inequality violation is the phenomenon where multiple non-communicating parties can exhibit correlations using quantum resources that are impossible if they can only use classical resources. One way to enforce non-communication is to apply a latency constraint: the parties must all produce outputs after they receive their inputs within a time window shorter than the speed of light delay between any pair of parties. If this latency constraint is relaxed so that a subset of the parties can communicate, we can obtain a new set of inequalities on correlations that extends Bell inequalities in a very natural way. Moreover, with this relaxed latency constraint, we can also have quantum communication between a subset of parties and thereby achieve possible quantum violations of these new inequalities. We ultimately wish to answer the fundamental question: "What are the physically realizable correlations between multiple parties under varying latency constraints?" To answer this question, we introduce latency-constrained games, a mathematical framework that extends nonlocal games to the setting where a subset of parties can communicate. The notion of latency-constrained games can have real-world applications, including high frequency trading, distributed computing, computer architecture, and distributed control systems. |
| title | Quantum Nonlocality under Latency Constraints |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2510.26349 |