Strong coupling between light and matter is possible with a variety of organic materials. In contrast to the simpler inorganic case, organic materials often have a complicated spectrum, with vibrationally dressed electronic transitions. Strong coupling to light competes with this vibrational dressing and, if strong enough, can suppress the entanglement between electronic and vibrational degrees of freedom. By exploiting symmetries, we can perform exact numerical diagonalization to find the polaritonic states for intermediate numbers of molecules and use these to define and validate accurate expressions for the lower polariton states and strong-coupling spectrum in the thermodynamic limit. Using this approach, we find that vibrational decoupling occurs as a sharp transition above a critical matter–light coupling strength. We also demonstrate how the polariton spectrum evolves with the number of molecules, recovering classical linear optics results only at large N.

中文翻译：

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振动穿戴的极化子的精确态和光谱

多种有机材料可以实现光与物质之间的强耦合。与简单的无机情况相比，有机材料通常具有复杂的光谱，并带有振动修饰的电子跃迁。与光的强耦合将与这种振动敷料竞争，如果足够强，则可以抑制电子自由度和振动自由度之间的纠缠。通过利用对称性，我们可以执行精确的数值对角线化，以找到中等数目分子的极化子态，并使用它们来定义和验证热力学极限中较低极化子态和强耦合谱的精确表达式。使用这种方法，我们发现振动解耦发生在临界物质（光耦合强度）之上的急剧转变。ñ。