论文标题
悬浮的纳米球之间的光能介导的耦合可以进行超局势
Optical-force-mediated coupling between levitated nanospheres can go ultrastrong
论文作者
论文摘要
从理论上讲，我们研究了光能介导的相互作用对一对介电纳米球的量子动力学的影响，这些介电纳米球光在两个邻近的光学镊子中光学地捕获。由于镊子梁和其他纳米圈的弹性散射光之间的干扰，有效的纳米圈耦合可以达到超肌耦合状态。突出显示了量子基态纠缠性质的实验可访问的特征，包括基于位置/动量相关函数的纠缠证人，以及对镊子特性的快速调制，具有相当大的动力学激发。
We theoretically investigate the effect of optical-force-mediated interactions onto the quantum dynamics of a pair of dielectric nanospheres optically trapped in two neighboring optical tweezers. Thanks to the interference between the tweezer beams and the elastically scattered light by the other nanosphere, the effective inter nanosphere coupling can reach the ultrastrong coupling regime. Experimentally accessible signatures of the entangled nature of the quantum ground state are highlighted, including entanglement witnesses based on position/momentum correlation functions and a sizable dynamical Casimir excitation upon a fast modulation of the tweezer's properties.
