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Experimentally Ruling Out Joint Reality Based on Locality with Device-Independent Steering |
| Shuaining Zhang1,2,3, Xiang Zhang2,3,1, Zhiyue Zheng1*, and Wei Zhang2,3,1* |
1Beijing Academy of Quantum Information Sciences, Beijing 100193, China
2Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China
3Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Renmin University of China, Beijing 100872, China
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| Cite this article: |
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Shuaining Zhang, Xiang Zhang, Zhiyue Zheng et al 2024 Chin. Phys. Lett. 41 010301 |
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Abstract As an essential concept to understand the world, whether the real values (or physical realities) of observables are suitable to physical systems beyond the classic has been debated for many decades. Although standard no-go results based on Bell inequalities have ruled out the joint reality of incompatible quantum observables, the possibility of giving simple yet strong arguments to rule out joint reality in any physical system (not necessarily quantum) with weaker assumptions and less observables has been explored and proposed recently. Here, we perform a device-independent experiment on a two-qubit superconducting system to show that the joint reality of two observables is incompatible with locality under the weaker assumption of the reality of observables in a single space-time region (or single qubit). Our results clearly show the violation of certain inequalities derived from both linear and nonlinear criteria. In addition, we study the robustness of the linear and nonlinear criterion against the effect of systematic decoherence. Our demonstration opens up the possibility of delineating classical and non-classical boundaries with simpler nontrivial quantum system.
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Received: 23 November 2023
Published: 19 January 2024
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| PACS: |
03.65.Ud
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(Entanglement and quantum nonlocality)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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| [1] | Einstein A, Podolsky B, and Rosen N 1935 Phys. Rev. 47 777 |
| [2] | Bell J S 1964 Physics 1 195 |
| [3] | Brunner N, Cavalcanti D, Pironio S, Scarani V, and Wehner S 2014 Rev. Mod. Phys. 86 419 |
| [4] | Kochen S and Specker E P 1968 Indiana Univ. Math. J. 17 59 |
| [5] | Budroni C, Cabello A, Gühne O, Kleinmann M, and Larsson J Å 2022 Rev. Mod. Phys. 94 045007 |
| [6] | Aspect A, Dalibard J, and Roger G 1982 Phys. Rev. Lett. 49 1804 |
| [7] | Weihs G, Jennewein T, Simon C, Weinfurter H, and Zeilinger A 1998 Phys. Rev. Lett. 81 5039 |
| [8] | Rowe M A, Kielpinski D, Meyer V, Sackett C A, Itano W M, Monroe C, and Wineland D J 2001 Nature 409 791 |
| [9] | Gröblacher S, Paterek T, Kaltenbaek R, Brukner Č, Żukowski M, Aspelmeyer M, and Zeilinger A 2007 Nature 446 871 |
| [10] | Kirchmair G, Zähringer F, Gerritsma R, Kleinmann M, Gühne O, Cabello A, Blatt R, and Roos C F 2009 Nature 460 494 |
| [11] | Zhang X, Um M, Zhang J, An S, Wang Y, Deng D L, Shen C, Duan L M, and Kim K 2013 Phys. Rev. Lett. 110 070401 |
| [12] | Leupold F M, Malinowski M, Zhang C, Negnevitsky V, Cabello A, Alonso J, and Home J P 2018 Phys. Rev. Lett. 120 180401 |
| [13] | Wang P F, Zhang J H, Luan C Y, Um M, Wang Y, Qiao M, Xie T, Zhang J N, Cabello A, and Kim K 2022 Sci. Adv. 8 eabk1660 |
| [14] | Mazurek M D, Pusey M F, Kunjwal R, Resch K J, and Spekkens R W 2016 Nat. Commun. 7 11780 |
| [15] | Zhan X, Cavalcanti E G, Li J, Bian Z, Zhang Y, Wiseman H M, and Xue P 2017 Optica 4 966 |
| [16] | Spekkens R W, Buzacott D H, Keehn A J, Toner B, and Pryde G J 2009 Phys. Rev. Lett. 102 010401 |
| [17] | Mazurek M D, Pusey M F, Resch K J, and Spekkens R W 2021 PRX Quantum 2 020302 |
| [18] | Klyachko A A, Can M A, Binicioǧlu S, and Shumovsky A S 2008 Phys. Rev. Lett. 101 020403 |
| [19] | Yu S X and Oh C H 2012 Phys. Rev. Lett. 108 030402 |
| [20] | Kleinmann M, Budroni C, Larsson J Å, Gühne O, and Cabello A 2012 Phys. Rev. Lett. 109 250402 |
| [21] | Cabello A 2003 Phys. Rev. Lett. 90 190401 |
| [22] | Spekkens R W 2005 Phys. Rev. A 71 052108 |
| [23] | Liang Y C, Spekkens R W, and Wiseman H M 2011 Phys. Rep. 506 1 |
| [24] | Hall M J W and Rivas Á 2019 Phys. Rev. A 100 062105 |
| [25] | Pusey M F 2018 Phys. Rev. A 98 022112 |
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