用于重量分析的纳米颗粒的量子传感;越大越好
Quantum sensing with nanoparticles for gravimetry; when bigger is better
摘要：
在2020年首次展示了冷却到量子基态的悬浮纳米球之后[1]，宏观量子传感器似乎即将出现。与其他量子系统相比，纳米球的大质量增强了纳米颗粒对重力和惯性力的敏感性。在这个观点中，我们描述了光学悬浮纳米粒子实验的特征[2]及其在加速度传感中的建议用途。悬浮纳米颗粒平台的独特之处在于不仅能够实现量子噪声限制的转导（通过量子精密测量预测以达到$10^{-15}$ ms $^{-2}$量级的灵敏度[3]），而且能够实现用于增强重力测量的长寿命量子空间叠加。这遵循了开发传感器的全球趋势，如冷原子干涉仪，利用叠加或纠缠。由于这些现有的量子技术的显着商业发展，我们讨论了将悬浮纳米粒子研究转化为应用的可行性。
英文摘要：
Following the first demonstration of a levitated nanosphere cooled to the quantum ground state in 2020 [1], macroscopic quantum sensors are seemingly on the horizon. The nanosphere's large mass as compared to other quantum systems enhances the susceptibility of the nanoparticle to gravitational and inertial forces. In this viewpoint we describe the features of experiments with optically levitated nanoparticles [2] and their proposed utility for acceleration sensing. Unique to the levitated nanoparticle platform is the ability to implement not only quantum noise limited transduction, predicted by quantum metrology to reach sensitivities on the order of $10^{-15}$ms$^{-2}$ [3], but also long-lived quantum spatial superpositions for enhanced gravimetry. This follows a global trend in developing sensors, such as cold-atom interferometers, that exploit superposition or entanglement. Thanks to significant commercial development of these existing quantum technologies, we discuss the feasibility of translating levitated nanoparticle research into applications.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
