Noise robustness of synchronization of two nanomechanical resonators coupled to the same cavity field

Year: 2020

Authors: Li WL., Piergentili P., Li J., Zippilli S., Natali R., Malossi N., Di Giuseppe G., Vitali D.

Autors Affiliation: Univ Camerino, Phys Div, Sch Sci & Technol, I-62032 Camerino, MC, Italy; Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy; Zhejiang Univ, Dept Phys, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou 310027, Zhejiang, Peoples R China; Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China; CNR, INO, Lgo Enrico Fermi 6, I-50125 Florence, Italy.

Abstract: We study synchronization of a room-temperature optomechanical system formed by two resonators coupled via radiation pressure to the same driven optical cavity mode. By using stochastic Langevin equations and effective slowly varying amplitude equations, we explore the long-time dynamics of the system. We see that thermal noise can induce significant non-Gaussian dynamical properties, including the coexistence of multistable synchronized limit cycles and phase diffusion. Synchronization in this optomechanical system is very robust with respect to thermal noise: in fact, even though each oscillator phase progressively diffuses over the whole limit cycle, its phase difference is locked, and such a phase correlation remains strong in the presence of thermal noise.

Journal/Review: PHYSICAL REVIEW A

Volume: 101 (1)      Pages from: 13802-1  to: 13802-11

More Information: We acknowledge the support of the European Union Horizon 2020 Programme for Research and Innovation through Project No. 732894 (FET Proactive HOT) and the Project QuaSeRT funded by the QuantERA ERA-NET Cofund in Quantum Technologies. P.P. acknowledges support from the European Union’s Horizon 2020 Programme for Research and Innovation under Grant No. 722923 (Marie Sklodowska Curie ETN-OMT).
DOI: 10.1103/PhysRevA.101.013802

Citations: 29
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