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Interference from Two-Photon Sources in Silica-on-Silicon Circuits at Telecom Wavelength

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【作者】 黎星云秦璐张家顺任梅珍安俊明杨晓红许兴胜

【Author】 Xing-Yun Li;Lu Qin;Jia-Shun Zhang;Mei-Zhen Ren;Jun-Ming An;Xiao-Hong Yang;Xing-Sheng Xu;State Key Laboratory of Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences;

【机构】 State Key Laboratory of Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences

【摘要】 The integrated photonic chip is a promising way to realize future quantum technology.Here we demonstrate a two-photon interference in the standard telecommunication band on a silica-on-silicon integrated photonic chip.Two identical photons in the 1.55 μm band,which are indistinguishable in spatial,frequency and polarization,are generated by type-Ⅰ collinear spontaneous parametric down-conversion via bismuth borate.The silica-on-silicon integrated chip,which has an insertion loss less than 1 dB,is a Mach-Zehnder interferometer with a thermo-optic phase shifter.A high visibility of 100% in the classical interference and 99.2% in the two-photon interference is achieved,indicating that the two-photon interference with high interference visibility on the chip is attained successfully.

【Abstract】 The integrated photonic chip is a promising way to realize future quantum technology.Here we demonstrate a two-photon interference in the standard telecommunication band on a silica-on-silicon integrated photonic chip.Two identical photons in the 1.55 μm band,which are indistinguishable in spatial,frequency and polarization,are generated by type-Ⅰ collinear spontaneous parametric down-conversion via bismuth borate.The silica-on-silicon integrated chip,which has an insertion loss less than 1 dB,is a Mach-Zehnder interferometer with a thermo-optic phase shifter.A high visibility of 100% in the classical interference and 99.2% in the two-photon interference is achieved,indicating that the two-photon interference with high interference visibility on the chip is attained successfully.

【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 61627820,61575191 and 61275045;the National Basic Research Program of China under Grant Nos 2016YFA0301200,2013CB632105
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2017年03期
  • 【分类号】TN491
  • 【下载频次】12
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