Linear Ultrastrong Optomechanical Interaction

Aisling Johnson; Iurie Coroli; Jannek J. Hansen; Kahan Dare; Markus Aspelmeyer; Uro\v{s} Deli\'c

Linear Ultrastrong Optomechanical Interaction

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arxiv 2305.16226 v1 pith:I6FDPQP7 submitted 2023-05-25 quant-ph

Kahan Dare , Jannek J. Hansen , Iurie Coroli , Aisling Johnson , Markus Aspelmeyer , Uroš Delić This is my paper

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keywords couplingultrastronginteractionlinearoptomechanicalregimesqueezingsystem

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abstract

Light-matter interaction in the ultrastrong coupling regime can be used to generate exotic ground states with two-mode squeezing and may be of use for quantum enhanced sensing. Current demonstrations of ultrastrong coupling have been performed in fundamentally nonlinear systems. We report a cavity optomechanical system that operates in the linear coupling regime, reaching a maximum coupling of $g_x/\Omega_x=0.55\pm 0.02$. Such a system is inherently unstable, which may in the future enable strong mechanical squeezing.

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