Sequential generation of multiphoton entanglement with a Rydberg superatom
Sequential generation of multiphoton entanglement with a Rydberg superatom
复制标题
与里德伯超原子连续产生多光子纠缠
DOI:
10.1038/s41566-022-01054-3
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发表时间:
2021-12
期刊:
影响因子:
35
通讯作者:
Jian-Wei Pan
中科院分区:
文献类型:
--
作者:
Chao-Wei Yang;Yong Yu;Jun Li;Bo Jing;Xiao-Hui Bao;Jian-Wei Pan
Multiqubit entanglement is an indispensable resource for quantum information science. In particular, the entanglement of photons is of conceptual interest due to its implications in measurement-based quantum computing, communication and metrology. The traditional way of spontaneous parametric downconversion already demonstrates the entanglement of up to a dozen photons but is hindered by its probabilistic nature. Here we experimentally demonstrate an efficient approach for multiphoton generation with a Rydberg superatom, a mesoscopic atomic ensemble under Rydberg blockade. Using it as an efficient single-photon interface, we iterate the photon creation process that gives rise to a train of single photons entangled in the time-bin degree of freedom. Photon correlations verify entanglement up to six qubits. The overall efficiency to detect one photon is 9.4%. After correcting the measurement inefficiencies, we obtain a scaling factor of 27%, surpassing previous results and paving the way for larger-scale photonic entanglement.
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影响因子:
56.9
作者:
Schwartz, I.;Cogan, D.;Gershoni, D.
通讯作者:
Gershoni, D.
影响因子:
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Pan Jian-Wei
影响因子:
8.6
作者:
Peng-Fei Sun;Yong Yu;Z. An;Jun Li;Chao-Wei Yang;Xiao-Hui Bao;Jian-Wei Pan
通讯作者:
Peng-Fei Sun;Yong Yu;Z. An;Jun Li;Chao-Wei Yang;Xiao-Hui Bao;Jian-Wei Pan
影响因子:
2.9
作者:
Saffman, M;Walker, TG
通讯作者:
Walker, TG