Experimental entanglement quantification for unknown quantum states in a semi-device-independent manner

Autor(en)

Yu Guo, Lijinzhi Lin, Huan Cao, Chao Zhang, Xiaodie Lin, Xiao Min Hu, Bi Heng Liu, Yun Feng Huang, Zhaohui Wei, Yong Jian Han, Chuan Feng Li, Guang Can Guo

Abstrakt

Using the concept of non-degenerate Bell inequality, we show that quantum entanglement, the critical resource for various quantum information processing tasks, can be quantified for any unknown quantum state in a semi-device-independent manner, where the quantification is based on the experimentally obtained probability distributions and prior knowledge of the quantum dimension only. Specifically, as an application of our approach to multi-level systems, we experimentally quantify the entanglement of formation and the entanglement of distillation for qutrit-qutrit quantum systems. In addition, to demonstrate our approach for multi-partite systems, we further quantify the geometric measure of entanglement of three-qubit quantum systems. Our results supply a general way to reliably quantify entanglement in multi-level and multi-partite systems, thus paving the way to characterize many-body quantum systems by quantifying the involved entanglement.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

University of Science and Technology of China (USTC), Hefei Normal University, Tsinghua University, Vienna Center for Quantum Science and Technology (VCQ)

Journal

Science China Information Sciences

Band

66

Anzahl der Seiten

8

ISSN

1674-733X

DOI

https://doi.org/10.48550/arXiv.2010.09442

Publikationsdatum

08-2023

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Computerwissenschaft

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a53700e5-373a-4cfa-8672-a2fd47dccac9