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

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    101 Citations (Scopus)

    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 pump time-bin preparation, wavelength demultiplexing, and entanglement analysis. A two-photon interference fringe with 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 low loss and tight integration features, paves the way for scalable real-world quantum information processors.

    Original languageEnglish
    Pages (from-to)724-727
    Number of pages4
    JournalOptica
    Volume2
    Issue number8
    DOIs
    Publication statusPublished - 2015

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