Abstract
Second-order sideband generation in an optomechanical system with the coupling between a mechanical resonator and a two-level system is discussed beyond the conventional linearized description of optomechanical interactions. The features of two-color second-order sideband generation are demonstrated in this hybrid system. We discovery that the switch between one- and two-color second-order sideband generation is easily realized by shifting the detuning between the control field and the cavity field or the transition frequency of the two-level system. The efficiency of two-color second-order sideband generation increases monotonously with the control field strength. The coupling strength between the mechanical resonator and the two-level system plays a decisive role in the appearance of the two-color second-order sidebands. The two-color second-order sideband generation may provide measurement with higher precision in new degrees of freedom.
Highlights
Cavity optomechanics[1,2,3], which explores the coupling between the optical cavity and the mechanical oscillation via radiation-pressure, has played an indispensable position in modern physics
There are three situations in a hybrid optomechanical system for the coupling among an optical cavity, a mechanical resonator and another object: a two-level system is coupled to both the cavity field and the mechanical mode[33]; a two-level atom is only coupled to the cavity field[30] and a two-level system is only coupled to the mechanical resonator[34]
We show the two-color second-order sideband generation in a hybrid optomechanical system where a two-level system is only coupled to the mechanical resonator
Summary
Cavity optomechanics[1,2,3], which explores the coupling between the optical cavity and the mechanical oscillation via radiation-pressure, has played an indispensable position in modern physics. We use the perturbation method to study the second-order sideband generation in a hybrid optomechanical system with a two-level system coupled to the mechanical resonator.
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