Related papers: Observing tight triple uncertainty relations in two-qubit systems

Observing tight triple uncertainty relations in two-qubit systems

URL: http://arxiv.org/abs/2410.05925v1
Date: Tue, 8 Oct 2024 11:24:24 GMT
Title: Observing tight triple uncertainty relations in two-qubit systems
Authors: Yan Wang, Jie Zhou, Xing-Yan Fan, Ze-Yan Hao, Jia-Kun Li, Zheng-Hao Liu, Kai Sun, Jin-Shi Xu, Jing-Ling Chen, Chuan-Feng Li, Guang-Can Guo,
Abstract summary: We demonstrate the uncertainty relations in two-qubit systems involving three physical components with the tight constant $2/sqrt3$. Our results provide a new insight into understanding the uncertainty relations with multiple observables and may motivate more innovative applications in quantum information science.
Score: 21.034105385856765
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: As the fundamental tool in quantum information science, the uncertainty principle is essential for manifesting nonclassical properties of quantum systems. Plenty of efforts on the uncertainty principle with two observables have been achieved, making it an appealing challenge to extend the scenario to multiple observables. Here, based on an optical setup, we demonstrate the uncertainty relations in two-qubit systems involving three physical components with the tight constant $2/\sqrt{3}$, which signifies a more precise limit in the measurement of multiple quantum components and offers deeper insights into the trade-offs between observables. Furthermore, we reveal the correspondence of the maximal values of the uncertainty functions and the degree of entanglement, where the more uncertainty is proportional to the higher degree of entanglement. Our results provide a new insight into understanding the uncertainty relations with multiple observables and may motivate more innovative applications in quantum information science.

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