title: Steady-state mechanical squeezing in a double-cavity optomechanical system.
abstract: We study the physical properties of double-cavity optomechanical system in which the mechanical resonator interacts with one of the coupled cavities and another cavity is used as an auxiliary cavity. The model can be expected to achieve the strong optomechanical coupling strength and overcome the optomechanical cavity decay, simultaneously. Through the coherent auxiliary cavity interferences, the steady-state squeezing of mechanical resonator can be generated in highly unresolved sideband regime. The validity of the scheme is assessed by numerical simulation and theoretical analysis of the steady-state variance of the mechanical displacement quadrature. The scheme provides a platform for the mechanical squeezing beyond the resolved sideband limit and solves the restricted experimental bounds at present.
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Dong-Yang
authors.initials: DY
authors.lastname: Wang
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Cheng-Hua
authors.initials: CH
authors.lastname: Bai
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Hong-Fu
authors.initials: HF
authors.lastname: Wang
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Ai-Dong
authors.initials: AD
authors.lastname: Zhu
authors.affiliation: Department of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, China.
authors.forename: Shou
authors.initials: S
authors.lastname: Zhang