Physicsnpj Quantum Information

Measurement-device-independent quantification of irreducible high-dimensional entanglement

Y. Guo, B. Yu, et al.

Discover the groundbreaking research by Yu Guo and colleagues on irreducible entanglement, a novel approach to characterizing high-dimensional entanglement in quantum systems. This study innovatively employs a measurement-device-independent protocol to certify and detect irreducible 3-dimensional entanglement, paving the way for more reliable protocols in quantum correlation detection.... show more

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Abstract

The certification of entanglement dimensionality is crucial to characterize quantum systems. Recent results show that correlations from high-dimensional states can be simulated by sequential operations on lower-dimensional systems, which may undermine standard characterization protocols. The authors introduce irreducible entanglement to denote dimensionality that cannot be decomposed into sequences of lower-dimensional entangled systems, and prove this feature can be detected measurement-device-independently via an entanglement witness protocol. They experimentally apply the method to a two-qutrit state and certify irreducible (at least) 3-dimensional entanglement.

Publisher

npj Quantum Information

Published On

Jan 01, 2020

Authors

Yu Guo, Bai-Chu Yu, Xiao-Min Hu, Bi-Heng Liu, Yu-Chun Wu, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo

DOI

https://doi.org/10.1038/s41534-020-0282-4

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