High-order exceptional points in optomechanics

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Abstract

<jats:title>Abstract</jats:title><jats:p>We study mechanical cooling in systems of coupled passive (lossy) and active (with gain) optical resonators. We find that for a driving laser which is red-detuned with respect to the cavity frequency, the supermode structure of the system is radically changed, featuring the emergence of genuine high-order exceptional points. This in turn leads to giant enhancement of both the mechanical damping and the spring stiffness, facilitating low-power mechanical cooling in the vicinity of gain-loss balance. This opens up new avenues of steering micromechanical devices with exceptional points beyond the lowest-order two.</jats:p>

Journal

  • Scientific Reports

    Scientific Reports 7 (1), 3386-, 2017-06-13

    Springer Science and Business Media LLC

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