论文标题
通过相互作用的纳米颗粒的反馈冷却，力梯度传感和纠缠
Force-Gradient Sensing and Entanglement via Feedback Cooling of Interacting Nanoparticles
论文作者
论文摘要
从理论上讲，我们表明了两个悬浮的，相互作用的纳米颗粒的反馈冷却能够对力进行差异感和固定纠缠的观察。反馈将两个颗粒驱动到固定的非热状态，该状态容易受到不均匀力场的影响，并表现出具有足够强的粒子间耦合的纠缠。我们预测，每微米范围的Zepto-Newton的力梯度传感是可行的，并且在最新的设置中可以实际观察到由于带电颗粒之间的库仑相互作用而引起的纠缠。
We show theoretically that feedback-cooling of two levitated, interacting nanoparticles enables differential sensing of forces and the observation of stationary entanglement. The feedback drives the two particles into a stationary, non-thermal state which is susceptible to inhomogeneous force fields and which exhibits entanglement for sufficiently strong inter-particle couplings. We predict that force-gradient sensing at the zepto-Newton per micron range is feasible and that entanglement due to the Coulomb interaction between charged particles can be realistically observed in state-of-the-art setups.
