12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion
| Autor: | Han-Sen Zhong, Zhen Wang, Yuan Li, Yu-Ming He, Yi Hu, Xi-Lin Wang, Chao-Yang Lu, Yu-Ao Chen, Lu Zhang, Weijun Zhang, Hao Li, Zu-En Su, Jian-Wei Pan, Xiao Jiang, Lixing You, Xing Ding, Li Li, Li-Chao Peng, Wei Li, Nai-Le Liu |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Quantum Physics Photon business.industry General Physics and Astronomy FOS: Physical sciences Physics::Optics Quantum entanglement 01 natural sciences 010309 optics Quantum technology Photon entanglement Optics Orders of magnitude (time) Spontaneous parametric down-conversion 0103 physical sciences Photonics 010306 general physics business Quantum Physics (quant-ph) Boson Optics (physics.optics) Physics - Optics |
| 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. 17 pages, 5 figures. the make-SPDC-great-again paper |
| Databáze: | OpenAIRE |
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