12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion
| Autor: | Zhong, Han-Sen, Li, Yuan, Li, Wei, Peng, Li-Chao, Su, Zu-En, Hu, Yi, He, Yu-Ming, Ding, Xing, Zhang, W. -J., Li, Hao, Zhang, L., Wang, Z., You, L. -X., Wang, Xi-Lin, Jiang, Xiao, Li, Li, Chen, Yu-Ao, Liu, Nai-Le, Lu, Chao-Yang, Pan, Jian-Wei |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 121, 250505 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.121.250505 |
| Popis: | Entangled photon sources with simultaneously near-unity heralding efficiency and indistinguishability are the fundamental elements for scalable photonic quantum technologies. We design and realize a degenerate entangled-photon source from an ultrafast pulsed laser pumped spontaneous parametric down-conversion (SPDC), which show simultaneously ~97% heralding efficiency and ~96% indistinguishability between independent single photons. Such a high-efficiency and frequency-uncorrelated SPDC source allows generation of the first 12-photon genuine entanglement with a state fidelity of 0.572(24). We further demonstrate a blueprint of scalable scattershot boson sampling using 12 SPDC sources and a 12*12-modes interferometer for three-, four-, and five-boson sampling, which yields count rates more than four orders of magnitudes higher than all previous SPDC experiments. Our work immediately enables high-efficiency implementations of multiplexing, scattershot boson sampling, and heralded creation of remotely entangled photons, opening up a promising pathway to scalable photonic quantum technologies. Comment: 17 pages, 5 figures. the make-SPDC-great-again paper |
| Databáze: | arXiv |
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