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Topologically protecting squeezed light on a photonic chip
文献摘要：
Squeezed light is a critical resource in quantum sensing and information processing.Due to the inherently weak optical nonlinearity and limited interaction volume,considerable pump power is typically needed to obtain ef-ficient interactions to generate squeezed light in bulk crystals.Integrated photonics offers an elegant way to in-crease the nonlinearity by confining light strictly inside the waveguide.For the construction of large-scale quantum systems performing many-photon operations,it is essential to integrate various functional modules on a chip.However,fabrication imperfections and transmission cross talk may add unwanted diffraction and coupling to other photonic elements,reducing the quality of squeezing.Here,by introducing the topological phase,we experimentally demonstrate the topologically protected nonlinear process of four-wave mixing,ena-bling the generation of squeezed light on a silica chip.We measure the cross-correlations at different evolution distances for various topological sites and verify the nonclassical features with high fidelity.The squeezing param-eters are measured to certify the protection of cavity-free,strongly squeezed states.The demonstration of topo-logical protection for squeezed light on a chip brings new opportunities for quantum integrated photonics,opening novel approaches for the design of advanced multi-photon circuits.
文献关键词：
中图分类号：
[1] 数理科学和化学（O） / 数学（O1） / 几何、拓扑（O18）
[2] 自动化技术、计算机技术（TP） / 计算技术、计算机技术（TP3） / 计算机的应用（TP39） / 信息处理(信息加工)（TP391）
[3] 数理科学和化学（O） / 物理学（O4） / 电磁学、电动力学（O44） / 电磁学（O441） / 电学（O441.1）
作者姓名：
RUO-JING REN;YONG-HENG LU;ZE-KUN JIANG;JUN GAO;WEN-HAO ZHOU;YAO WANG;ZHI-QIANG JIAO;XIAO-WEI WANG;ALEXANDER S.SOLNTSEV;XIAN-MIN JIN
作者机构：
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;CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China;School of Mathematical and Physical Sciences,University of Technology Sydney,Ultimo,New South Wales 2007,Australia;TuringQ Co.,Ltd.,Shanghai 200240,China
文献出处：
光子学研究（英文）
引用格式：
[1]RUO-JING REN;YONG-HENG LU;ZE-KUN JIANG;JUN GAO;WEN-HAO ZHOU;YAO WANG;ZHI-QIANG JIAO;XIAO-WEI WANG;ALEXANDER S.SOLNTSEV;XIAN-MIN JIN-.Topologically protecting squeezed light on a photonic chip)[J].光子学研究（英文）,2022(02):456-464
A类：
Squeezed,certify
B类：
Topologically,protecting,squeezed,light,chip,critical,resource,quantum,sensing,information,processing,Due,inherently,weak,optical,nonlinearity,limited,volume,considerable,pump,power,typically,needed,obtain,ef,ficient,interactions,generate,bulk,crystals,Integrated,photonics,offers,elegant,way,crease,by,confining,strictly,inside,waveguide,For,construction,large,scale,systems,performing,many,operations,essential,various,functional,modules,However,fabrication,imperfections,transmission,cross,talk,may,add,unwanted,diffraction,coupling,other,elements,reducing,quality,squeezing,Here,introducing,phase,experimentally,demonstrate,topologically,protected,four,mixing,ena,bling,generation,silica,We,correlations,different,evolution,distances,sites,verify,nonclassical,features,high,fidelity,param,eters,are,measured,protection,cavity,free,strongly,states,demonstration,brings,new,opportunities,integrated,opening,novel,approaches,design,advanced,multi,circuits
AB值：
0.633888
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