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arXiv · 1506.02758

A compact and reconfigurable silicon nitride time-bin entanglement circuit

C. Xiong·X. Zhang·A. Mahendra·J. He·D. -Y. Choi·C. J. Chae·D. Marpaung·A. Leinse·R. G. Heideman·M. Hoekman·C. G. H. Roeloffzen·R. M. Oldenbeuving·P. W. L. van Dijk·C. Taddei·P. H. W. Leong·B. J. Eggleton
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Abstract

Photonic chip based time-bin entanglement has attracted significant attention because of its potential for quantum communication and computation. Useful time-bin entanglement systems must be able to generate, manipulate and analyze entangled photons on a photonic chip for stable, scalable and reconfigurable operation. Here we report the first time-bin entanglement photonic chip that integrates time-bin generation, wavelength demultiplexing and entanglement analysis. A two-photon interference fringe with an 88.4% visibility is measured (without subtracting any noise), indicating the high performance of the chip. Our approach, based on a silicon nitride photonic circuit, which combines the low-loss characteristic of silica and tight integration features of silicon, paves the way for scalable real-world quantum information processors.

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C. Xiong, X. Zhang, A. Mahendra, J. He, D. -Y. Choi, C. J. Chae, D. Marpaung, A. Leinse, R. G. Heideman, M. Hoekman, C. G. H. Roeloffzen, R. M. Oldenbeuving, P. W. L. van Dijk, C. Taddei, P. H. W. Leong, B. J. Eggleton. 2015-06-09. A compact and reconfigurable silicon nitride time-bin entanglement circuit. https://doi.org/10.1364/optica.2.000724

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