论文标题
钻石纳米力学谐振器受声音带隙保护
Diamond nanomechanical resonators protected by a phononic band gap
论文作者
论文摘要
我们报告了连接到音调正方形晶格的钻石悬臂的设计，制造和表征。我们表明，通过语音带隙对机械模式的强大保护导致机械Q因子的三个级数增加，而Q-因子在高达100 MHz的频率下超过10^6。温度依赖性研究表明，在几个K处获得的Q因子仍然受材料损失的限制。高Q钻石纳米力学谐振器为自旋机械研究提供了有希望的杂交量子系统。
We report the design, fabrication, and characterization of diamond cantilevers attached to a phononic square lattice. We show that the robust protection of mechanical modes by phononic band gaps leads to a three-orders-of-magnitude increase in mechanical Q-factors, with the Q-factors exceeding 10^6 at frequencies as high as 100 MHz. Temperature dependent studies indicate that the Q-factors obtained at a few K are still limited by the materials loss. The high-Q diamond nanomechanical resonators provide a promising hybrid quantum system for spin-mechanics studies.
