论文标题
通过连贯散射在室温下在室温下进行强的光学耦合
Strong Optomechanical Coupling at Room Temperature by Coherent Scattering
论文作者
论文摘要
对系统的量子控制需要比任何脱碳率更快地操纵量子状态。对于介观系统，到目前为止，仅几乎没有低温系统就达到了这一点。量子控制的一个重要里程碑是所谓的强耦合方案，在空腔中，该耦合方案对应于大于空腔衰减速率和机械阻尼的光学耦合强度。在这里，我们在悬浮的二氧化硅颗粒和高技巧光腔之间的室温下展示了强耦合方案。正常模式分裂是通过使用相干散射而不是直接驱动腔来实现的。这里实现的耦合强度接近腔宽度的三倍，深入到了强耦合方案。进入强耦合方案是在室温下使用介观对象迈出量子控制的重要一步。
Quantum control of a system requires the manipulation of quantum states faster than any decoherence rate. For mesoscopic systems, this has so far only been reached by few cryogenic systems. An important milestone towards quantum control is the so-called strong coupling regime, which in cavity optomechanics corresponds to an optomechanical coupling strength larger than cavity decay rate and mechanical damping. Here, we demonstrate the strong coupling regime at room temperature between a levitated silica particle and a high finesse optical cavity. Normal mode splitting is achieved by employing coherent scattering, instead of directly driving the cavity. The coupling strength achieved here approaches three times the cavity linewidth, crossing deep into the strong coupling regime. Entering the strong coupling regime is an essential step towards quantum control with mesoscopic objects at room temperature.
