Asymptotical Locking Tomography of High-Dimensional Entanglement

Ling Jun Kong, Rui Liu, Wen Rong Qi, Zhou Xiang Wang, Shuang Yin Huang, Chenghou Tu, Yongnan Li, Hui Tian Wang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

11 引用 (Scopus)

摘要

High-dimensional (HD) entanglement provides a very promising way of transcending the limitations of the two-dimensional entanglement between qubits for increasing channel capacity in many quantum protocols. In the pursuit of capitalizing on the HD entangled states, one of the central issues is to unambiguously and comprehensively quantify and reconstruct them. The full quantum state tomography is a unique solution, but it is undesirable and even impractical because the measurements increase rapidly in d 4 for a bipartite d-dimensional quantum state. Here we present a very efficient and practical tomography method - asymptotical locking tomography (ALT), which can harvest full information of bipartite d-dimensional entangled states by very few measurements less than 2d 2 only. To showcase the validity and reasonableness of our ALT, we carry out the test with the two-photon spin-orbital angular momentum hyperentangled states in a four-dimensional subspace. Besides high-efficiency and practicality, our ALT is also universal and can be generalized into multipartite HD entanglement and other quantum systems.

源语言英语
文章编号034204
期刊Chinese Physics Letters
37
3
DOI
出版状态已出版 - 3月 2020
已对外发布

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Kong, L. J., Liu, R., Qi, W. R., Wang, Z. X., Huang, S. Y., Tu, C., Li, Y., & Wang, H. T. (2020). Asymptotical Locking Tomography of High-Dimensional Entanglement. Chinese Physics Letters, 37(3), 文章 034204. https://doi.org/10.1088/0256-307X/37/3/034204