Experimental ten-photon entanglement
Abstract
Quantum entanglement among multiple spatially separated particles is of fundamental interest, and can serve as central resources for studies in quantum nonlocality, quantum-to-classical transition, quantum error correction, and quantum simulation. The ability of generating an increasing number of entangled particles is an important benchmark for quantum information processing. The largest entangled states were previously created with fourteen trapped ions, eight photons, and five superconducting qubits. Here, based on spontaneous parametric down-converted two-photon entanglement source with simultaneously a high brightness of ~12 MHz/W, a collection efficiency of ~70% and an indistinguishability of ~91% between independent photons, we demonstrate, for the first time, genuine and distillable entanglement of ten single photons under different pump power. Our work creates a state-of-the-art platform for multi-photon experiments, and provide enabling technologies for challenging optical quantum information tasks such as high-efficiency scattershot boson sampling with many photons.
Cite
@article{arxiv.1605.08547,
title = {Experimental ten-photon entanglement},
author = {Xi-Lin Wang and Luo-Kan Chen and Wei Li and He-Liang Huang and Chang Liu and Chao Chen and Yi-Han Luo and Zu-En Su and Dian Wu and Zheng-Da Li and He Lu and Yi Hu and Xiao Jiang and Cheng-Zhi Peng and Li Li and Nai-Le Liu and Yu-Ao Chen and Chao-Yang Lu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:1605.08547},
year = {2016}
}
Comments
65 pages, supplementary information included, with all raw data. to appear in Physical Review Letters