Kerr enhanced backaction cooling in magnetomechanics
- URL: http://arxiv.org/abs/2202.13228v2
- Date: Thu, 27 Apr 2023 11:51:07 GMT
- Title: Kerr enhanced backaction cooling in magnetomechanics
- Authors: D. Zoepfl, M. L. Juan, N. Diaz-Naufal, C. M. F. Schneider, L. F. Deeg,
A. Sharafiev, A. Metelmann, G. Kirchmair
- Abstract summary: Optomechanics is a prime example of light matter interaction, where photons directly couple to phonons, allowing to precisely control and measure the state of a mechanical object.
This makes it a very appealing platform for testing fundamental physics or for sensing applications.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Optomechanics is a prime example of light matter interaction, where photons
directly couple to phonons, allowing to precisely control and measure the state
of a mechanical object. This makes it a very appealing platform for testing
fundamental physics or for sensing applications. Usually, such mechanical
oscillators are in highly excited thermal states and require cooling to the
mechanical ground state for quantum applications, which is often accomplished
by utilising optomechanical backaction. However, while massive mechanical
oscillators are desirable for many tasks, their frequency usually decreases
below the cavity linewidth, significantly limiting the methods that can be used
to efficiently cool. Here, we demonstrate a novel approach relying on an
intrinsically nonlinear cavity to backaction-cool a low frequency mechanical
oscillator. We experimentally demonstrate outperforming an identical, but
linear, system by more than one order of magnitude. Furthermore, our theory
predicts that with this approach we can also surpass the standard cooling limit
of a linear system. By exploiting a nonlinear cavity, our approach enables
efficient cooling of a wider range of optomechanical systems, opening new
opportunities for fundamental tests and sensing.
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