Strong optomechanical interactions in a sliced photonic crystal nanobeam.
Strong optomechanical interactions in a sliced photonic crystal nanobeam.
复制标题
DOI：
10.1038/srep15974
复制
发表时间：
2015-11-02
影响因子：
4.6
通讯作者：
Verhagen E
中科院分区：
文献类型：
--
作者：
Leijssen R;Verhagen E
机械和光学自由度之间的耦合强烈增强，通过使用亚波长光学模式分布。我们实现了一个光学机械系统的基础上切片的光子晶体纳米梁，它结合了这种高度限制的光场与低质量的机械模式。分析了运动的传递和辐射压力的影响，发现该系统的光子-声子耦合率g_0/2π = 11.5MHz，比以前报道的数值高出一个数量级。我们表明，大的光机械相互作用，使检测噪声低于标准的量子极限，即使在宽带设备，重要的传感器应用以及基于测量的量子控制检测热运动。
Coupling between mechanical and optical degrees of freedom is strongly enhanced by using subwavelength optical mode profiles. We realize an optomechanical system based on a sliced photonic crystal nanobeam, which combines such highly confined optical fields with a low-mass mechanical mode. Analyzing the transduction of motion and effects of radiation pressure we find the system exhibits a photon-phonon coupling rate g0 /2π ≈ 11.5 MHz, exceeding previously reported values by an order of magnitude. We show that the large optomechanical interaction enables detecting thermal motion with detection noise below that at the standard quantum limit, even in broad bandwidth devices, important for both sensor applications as well as measurement-based quantum control.