Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip

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2013-02-25

Author

Xu, Xinan
Xie, Zhenda
Zheng, Jiangjun
Liang, Junlin
Zhong, Tian
Yu, Mingbin
Kocaman, Serdar
Lo, Guo-Qiang
Kwong, Dim-Lee
Englund, Dirk R.
Wong, Franco N.C.
Wong, Chee Wei

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Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%. Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO4 waveguide chip, serving as the entangled photon source and pumped with a self-injection locked laser, for the photon statistical measurements. Efficient four-port coupling in the communications C-band and in the high-index-contrast silicon photonics platform is demonstrated, with matching theoretical predictions of the quantum interference visibility. Constituents for the residual quantum visibility imperfection are examined, supported with theoretical analysis of the sequentially-triggered multipair biphoton contribution and techniques for visibility compensation, towards scalable high-bitrate quantum information processing and communications.

Subject Keywords

Atomic and Molecular Physics, and Optics

URI

https://hdl.handle.net/11511/35528

Journal

Optics Express

DOI

https://doi.org/10.1364/oe.21.005014

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

X. Xu et al., “Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip,” Optics Express, pp. 5014–5024, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35528.