Toward scalable boson sampling with photon loss

Hui Wang, Wei Li, Xiao Jiang, Y. -M. He, Y. -H. Li, X Ding, M. -C. Chen, J Qin, C. -Z Peng, C. Schneider, M Kamp, W. -J. Zhang, H Li, L. -X. You, Z Wang, J. P. Dowling, Sven Höfling, Chao-Yang Lu, Jian-Wei Pan

Research output: Contribution to journalArticlepeer-review

101 Citations (Scopus)

Abstract

Boson sampling is a well-defined task that is strongly believed to be intractable for classical computers, but can be efficiently solved by a specific quantum simulator. However, an outstanding problem for large-scale experimental boson sampling is the scalability. Here we report an experiment on boson sampling with photon loss, and demonstrate that boson sampling with a few photons lost can increase the sampling rate. Our experiment uses a quantum-dot-micropillar single-photon source demultiplexed into up to seven input ports of a 16×16 mode ultra-low-loss photonic circuit, and we detect three-, four- and five-fold coincidence counts. We implement and validate lossy boson sampling with one and two photons lost, and obtain sampling rates of 187 kHz, 13.6 kHz, and 0.78 kHz for five-, six- and seven-photon boson sampling with two photons lost, which is 9.4, 13.9, and 18.0 times faster than the standard boson sampling, respectively. Our experiment shows an approach to significantly enhance the sampling rate of multiphoton boson sampling.
Original languageEnglish
Article number230502
Number of pages6
JournalPhysical Review Letters
Volume120
Issue number23
DOIs
Publication statusPublished - 6 Jun 2018

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