双曲介质中的超库仑原子-原子相互作用
Super-Coulombic atom-atom interactions in hyperbolic media
摘要：
偶极-偶极相互作用控制的现象，如合作兰姆位移，超辐射衰减率，范德华力，以及共振能量转移率通常限于库仑近场。在这里，我们揭示了一类真实的光子和虚拟的光子长程量子电动力学（QED）的相互作用，有一个双曲色散介质中的奇异性。偶极-偶极耦合中的奇异性，称为超库仑相互作用，是有效相互作用距离的结果，该距离在理想极限中为零，而与物理距离无关。我们研究了双曲介质中原子-原子相互作用的整个景观，并提出了在红外光谱范围内的声子极化激元六方氮化硼和在可见光范围内的等离子体超晶格结构的实际实现。我们的工作为控制双曲介质中的冷原子和研究光学声子介导量子相互作用的多体原子态铺平了道路。
英文摘要：
Dipole-dipole interactions which govern phenomena like cooperative Lamb shifts, superradiant decay rates, Van der Waals forces, as well as resonance energy transfer rates are conventionally limited to the Coulombic near-field. Here, we reveal a class of real-photon and virtual-photon long-range quantum electrodynamic (QED) interactions that have a singularity in media with hyperbolic dispersion. The singularity in the dipole-dipole coupling, referred to as a Super-Coulombic interaction, is a result of an effective interaction distance that goes to zero in the ideal limit irrespective of the physical distance. We investigate the entire landscape of atom-atom interactions in hyperbolic media and propose practical implementations with phonon-polaritonic hexagonal boron nitride in the infrared spectral range and plasmonic super-lattice structures in the visible range. Our work paves the way for the control of cold atoms in hyperbolic media and the study of many-body atomic states where optical phonons mediate quantum interactions.
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