标题： 一维光机械晶体中通过二聚化增强的光子-声子耦合 显示英文标题

标题： Enhanced photon-phonon coupling via dimerization in one-dimensional optomechanical crystals

摘要： 我们证明，光机械晶体晶格的二聚化会导致能带图的折叠，从而通过辐射压力将弯曲机械模式与单元胞内的光学场耦合。 与目前实现的晶体相比，发现光子和声子之间的耦合有显著改善。 为了实验验证，我们在硅光机械纳米梁腔中实现了二聚化晶格，并测量了在 $\lambda_{c} = 1545nm$ 处的光学共振与 1.14GHz 处的机械共振之间的真空耦合速率为 $g_0/2\pi=1.7MHz$。 显示英文摘要

摘要： We show that dimerization of an optomechanical crystal lattice, which leads to folding of the band diagram, can couple flexural mechanical modes to optical fields within the unit cell via radiation pressure. When compared to currently realized crystals, a substantial improvement in the coupling between photons and phonons is found. For experimental verification, we implement a dimerized lattice in a silicon optomechanical nanobeam cavity and measure a vacuum coupling rate of $g_0/2\pi=1.7MHz$ between an optical resonance at $\lambda_{c} = 1545nm$ and a mechanical resonance at 1.14GHz.