Sensing force gradients with cavity optomechanics while evading backaction
We study force gradient sensing by a coherently driven mechanical resonator with phase-sensitive detection of motion via the two-tone backaction evading measurement of cavity optomechanics. The response of the cavity to two coherent pumps is solved by numerical integration of the classical equations...
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Main Authors | , , , , |
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Format | Journal Article |
Language | English |
Published |
10.05.2024
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Subjects | |
Online Access | Get full text |
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Summary: | We study force gradient sensing by a coherently driven mechanical resonator
with phase-sensitive detection of motion via the two-tone backaction evading
measurement of cavity optomechanics. The response of the cavity to two coherent
pumps is solved by numerical integration of the classical equations of motion,
showing an extended region of monotonic response. We use Floquet theory to
model the fluctuations, which rise only slightly above that of the usual
backaction evading measurement in the presence of the mechanical drive. Our
analysis indicates that this sensing technique is advantageous for applications
such as Atomic Force Microscopy. |
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DOI: | 10.48550/arxiv.2405.06589 |