Electro-mechano-optical detection of nuclear magnetic resonance

Kazuyuki Takeda, Kentaro Nagasaka, Atsushi Noguchi, Rekishu Yamazaki, Yasunobu Nakamura, Eiji Iwase, Jacob M. Taylor, Koji Usami

    Research output: Contribution to journalArticle

    11 Citations (Scopus)


    Signal reception of nuclear magnetic resonance (NMR) usually relies on electrical amplification of the electromotive force caused by nuclear induction. Here, we report up-conversion of a radio-frequency NMR signal to an optical regime using a high-stress silicon nitride membrane that interfaces the electrical detection circuit and an optical cavity through the electro-mechanical and the opto-mechanical couplings. This enables optical NMR detection without sacrificing the versatility of the traditional nuclear induction approach. While the signal-to-noise ratio is currently limited by the Brownian motion of the membrane as well as additional technical noise, we find it can exceed that of the conventional electrical schemes by increasing the electro-mechanical coupling strength. The electro-mechano-optical NMR detection presented here opens the possibility of mechanical parametric amplification of NMR signals. Moreover, it can potentially be combined with the laser cooling technique applied to nuclear spins.

    Original languageEnglish
    Article number2334-2536/18/020152-07
    Pages (from-to)152-158
    Number of pages7
    Issue number2
    Publication statusPublished - 2018 Feb 20

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

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  • Cite this

    Takeda, K., Nagasaka, K., Noguchi, A., Yamazaki, R., Nakamura, Y., Iwase, E., Taylor, J. M., & Usami, K. (2018). Electro-mechano-optical detection of nuclear magnetic resonance. Optica, 5(2), 152-158. [2334-2536/18/020152-07]. https://doi.org/10.1364/OPTICA.5.000152