Photonic-chip-based dense entanglement distribution  

作　　者：Shang-Yu Ren Wei-Qiang Wang Yu-Jie Cheng Long Huang Bing-Zheng Du Wei Zhao Guang-Can Guo Lan-Tian Feng Wen-Fu Zhang Xi-Feng Ren 

机构地区：[1]CAS Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China [3]State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China

出　　处：《PhotoniX》2023年第1期522-530,共9页智汇光学（英文）

基　　金：National Natural Science Foundation of China(NSFC)(Nos.62061160487,12004373,62075238);Innovation Program for Quantum Science and Technology(No.2021ZD0303200);Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB24030601);CAS Project for Young Scientists in Basic Research(No.YSBR-049);Postdoctoral Science Foundation of China(No.2020 M671860);Fundamental Research Funds for the Central Universities.

摘　　要：The dense quantum entanglement distribution is the basis for practical quantum communication,quantum networks and distributed quantum computation.To make entanglement distribution processes stable enough for practical and large-scale applications,it is necessary to perform them with the integrated pattern.Here,we first integrate a dense wavelength-division demultiplexing system and unbalanced Mach-Zehnder interferometers on one large-scale photonic chip and demonstrate the multi-channel wavelength multiplexing entanglement distribution among distributed photonic chips.Specifically,we use one chip as a sender to produce high-performance and wideband quantum photon pairs,which are then sent to two receiver chips through 1-km standard optical fibers.The receiver chip includes a dense wavelength-division demultiplexing system and unbalanced Mach-Zehnder interferometers and realizes multi-wavelength-channel energy-time entanglement generation and analysis.High quantum interference visibilities prove the effectiveness of the multi-chip system.Our work paves the way for practical entanglement-based quantum key distribution and quantum networks.

关 键 词：COMPUTATION quantum DISTRIBUTION 

分 类 号：O413[理学—理论物理]