首页|Multi-particle quantum walks on 3D integrated photonic chip

Multi-particle quantum walks on 3D integrated photonic chip

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  • 国家科技期刊平台
  • NETL
  • NSTL
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Quantum walks provide a speed-up in computational power for various quantum algorithms and serve as inspiration for the construction of complex graph representations.Many pioneering works have been dedicated to expanding the experimental state space and the complexity of graphs.However,these experiments are mostly limited to small experimental scale,which do not reach a many-body level and fail to reflect the multi-particle quantum interference effects among non-adjacent modes.Here,we present a quantum walk with three photons on a two-dimensional triangular lattice,which is mapped to a 19 x 19 x 19 high-dimensional state space and constructs a complex graph with 6859 nodes and 45,486 edges.By utilizing the statistical signatures of the output combinations and incorporating machine learning techniques,we successfully validate the nonclassical properties of the experiment.Our implementation provides a paradigm for exponentially expanding the state space and graph complexity of quantum walks,paving the way for surmounting the classical regime in large-scale quantum simulations.

Wen-Hao Zhou、Xiao-Wei Wang、Ruo-Jing Ren、Yu-Xuan Fu、Yi-Jun Chang、Xiao-Yun Xu、Hao Tang、Xian-Min Jin

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Center for Integrated Quantum Information Technologies(IQIT),School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong University,Shanghai 200240,China

Hefei National Laboratory,Hefei 230088,China

School of Artificial Intelligence Science and Technology,University of Shanghai for Science and Technology,Shanghai,China

Institute of Photonic Chips,University of Shanghai for Science and Technology,Shanghai,China

Chip Hub for Integrated Photonics Xplore(CHIPX),Shanghai Jiao Tong University,Wuxi 214000,China

TuringQ Co.,Ltd.,Shanghai 200240,China

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2024

10.1038/s41377-024-01627-7

光:科学与应用(英文版)
中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD
ISSN：2095-5545
年,卷(期)：2024.13(12)