Interference from Two-Photon Sources in Silica-on-Silicon Circuits at Telecom Wavelength
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, Beijing 100083
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.
收稿日期: 2016-10-27
出版日期: 2017-02-28
:
42.50.St
(Nonclassical interferometry, subwavelength lithography)
42.65.Lm
(Parametric down conversion and production of entangled photons)
42.79.Gn
(Optical waveguides and couplers)
引用本文:
. [J]. 中国物理快报, 2017, 34(3): 34211-034211.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/34/3/034211
或
https://cpl.iphy.ac.cn/CN/Y2017/V34/I3/34211
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2017, Vol. 34 
