硅量子光子芯片上的近红外Hong-Ou-Mandel干涉

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

作者信息

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

机构信息

Optical Nanostructures Laboratory, Center for Integrated Science and Engineering, Solid-State Science and Engineering, and Mechanical Engineering, Columbia University, New York, New York 10027, USA.

出版信息

Opt Express. 2013 Feb 25;21(4):5014-24. doi: 10.1364/OE.21.005014.

DOI:10.1364/OE.21.005014

PMID:23482034

Abstract

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, towards scalable high-bitrate quantum information processing and communications. The on-chip HOM interference is useful towards scalable high-bitrate quantum information processing and communications.

摘要

在硅基纳米光子定向耦合器中观察到近红外Hong-Ou-Mandel量子干涉，片上原始可见度达90.5%。在周期性极化的KTiOPO₄波导芯片中产生光谱明亮的1557纳米双光子态，用作纠缠光子源，并由自注入锁定激光器泵浦，用于光子统计测量。展示了在通信C波段和高折射率对比度硅光子平台中的高效四端口耦合，与量子干涉可见度的理论预测相匹配。研究了残余量子可见度缺陷的成分，并通过对顺序触发的多对双光子的理论分析提供支持，以实现可扩展的高比特率量子信息处理和通信。片上HOM干涉对于可扩展的高比特率量子信息处理和通信很有用。