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Tunable Amplification and Cooling of a Diamond Resonator with a Microscope
Physical Review Applied ( IF 4.6 ) Pub Date : 2021-07-27 , DOI: 10.1103/physrevapplied.16.014063
Harishankar Jayakumar , Behzad Khanaliloo , David P. Lake , Paul E. Barclay

Control of the dynamics of mechanical resonators is central to quantum science and metrology applications. Optomechanical control of diamond resonators is attractive owing to the excellent physical properties of diamond and its ability to host electronic spins that can be coherently coupled to mechanical motion. Using a confocal microscope, we demonstrate tunable amplification and damping of the motion of a diamond nanomechanical resonator. Observation of both normal-mode cooling from room temperature to 80 K and amplification into self-oscillations with 60μW of optical power is observed via waveguide optomechanical readout. This system is promising for quantum spin optomechanics, as it is predicted to enable optical control of stress-spin coupling with rates of approximately 1 MHz (100 THz) to ground (excited) states of diamond nitrogen-vacancy centers.

中文翻译:

用显微镜可调放大和冷却金刚石谐振器

机械谐振器的动力学控制是量子科学和计量学应用的核心。金刚石谐振器的光机械控制具有吸引力,因为金刚石具有优异的物理特性,并且能够承载可以与机械运动相干耦合的电子自旋。使用共聚焦显微镜,我们展示了金刚石纳米机械谐振器运动的可调放大和阻尼。观察从室温到 80 K 的常模冷却和放大为自激振荡60μ通过波导光机械读数观察光功率的变化。该系统有望用于量子自旋光力学,因为预计它可以对应力-自旋耦合进行光学控制,速率约为1 MHz (100 THz) 到金刚石氮空位中心的接地(激发)状态。
更新日期:2021-07-28
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