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arXiv:2311.09539 · Physica Scripta

Entanglement constraint on wave-particle duality for tripartite systems

Zhuojun Li, Y Q He, D Ding, Ting Gao, Fengli Yan

Published Apr 30, 2024• 0 citations
arXivHTMLPDF

Abstract

Abstract A global multi-partite entanglement may place a constraint on the wave-particle duality. We investigate this constraint relation of the global entanglement and the quantitative wave-particle duality in tripartite systems. We perform quantum state tomography to reconstruct the reduced density matrix by using the OriginQ quantum computing cloud platform. As a result, we show that, theoretically and experimentally, the quantitative wave-particle duality is indeed constrained by the global tripartite entanglement. The present constraint relation can not only provide the foundational explanation for experimentally testing wave-particle duality, and also give the global entanglement a motivated physical meaning from the point of view of the quantitative wave-particle duality.

DOI
10.1088/1402-4896/ad45ca

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Abstract Wave-particle duality is an inherent characteristic of microscopic systems, which exhibit both wave-like and particle-like behaviors depending on the experimental setup. On the other hand, quantum coherence refers to the ability of a quantum state to preserve its superposition despite interactions and thermalization effects. In this study, we experimentally investigate a tighter wave-particle duality based on quantum coherence. We construct a heralded single-photon source and use the expect values of Pauli operators to quantify the interferometric visibility and path distinguishability of photons. By employing quantum state tomography, we reconstruct the density matrix of the quantum state and assess its quantum coherence. Our results provide experimental evidence for the tighter wave-particle duality based on quantum coherence.
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The notion of wave–particle duality remains one of the most debated subjects in the history of quantum physics. The most famous debate on the subject occurred between Bohr and Einstein. In this work, we revisit the wave–particle duality in the Bohr–Einstein debate from the viewpoint of the recently established duality-entanglement relation. We show that the duality-entanglement relation can provide a valuable framework for quantitative analysis of the Einstein's gedanken double-slit experiment and clarify some of its fundamental aspects.
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