Time-bin-encoded boson sampling with a single-photon device
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Boson sampling is a problem strongly believed to be intractable for classical computers, but can be naturally solved on a specialized photonic quantum simulator. Here, we implement the first time-bin-encoded boson sampling using a highly indistinguishable (∼94%) single-photon source based on a single quantum-dot-micropillar device. The protocol requires only one single-photon source, two detectors, and a loop-based interferometer for an arbitrary number of photons. The single-photon pulse train is time-bin encoded and deterministically injected into an electrically programmable multimode network. The observed three- and four-photon boson sampling rates are 18.8 and 0.2 Hz, respectively, which are more than 100 times faster than previous experiments based on parametric down-conversion.
He , Y , Ding , X , Huang , H -L , Qin , J , Wang , C , Unsleber , S , Chen , C , Wang , H , He , Y -M , Wang , X -L , Zhang , W -J , Chen , S -J , Schneider , C , Kamp , M , You , L -X , Wang , Z , Höfling , S , Lu , C-Y & Pan , J-W 2017 , ' Time-bin-encoded boson sampling with a single-photon device ' , Physical Review Letters , vol. 118 , no. 19 , 190501 . https://doi.org/10.1103/PhysRevLett.118.190501
Physical Review Letters
© 2017, American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at journals.aps.org/prl / https://doi.org/10.1103/PhysRevLett.118.190501
DescriptionThis work was supported by the National Natural Science Foundation of China, the Chinese Academy of Sciences, the National Fundamental Research Program, and the State of Bavaria.
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