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High-order exceptional points in optomechanics.

H JingŞ K ÖzdemirH LüFranco Nori
Published in: Scientific reports (2017)
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.
Keyphrases
  • high speed
  • high resolution
  • sensitive detection
  • quantum dots
  • rare case