The strong coupling between molecules and photons in resonant cavities offers a new toolbox to manipulate photochemical reactions. Although the quenching of photochemical reactions in the strong coupling regimen has been demonstrated before, their enhancement has proven to be more elusive. Here, by means of a state-of-the-art approach, we show how the trans$\to$cis photoisomerization quantum yield of azobenzene embedded in a realistic environment can be higher in polaritonic conditions than in the cavity-free case. We characterize the mechanism leading to such enhancement and discuss the conditions to push the photostationary state toward the unfavored reaction product. Our results provide a signature that the control of photochemical reactions through strong coupling can be extended from selective quenching to improvement of the quantum yields.

共振腔中分子与光子之间的强耦合为操纵光化学反应提供了一个新的工具箱。尽管以前已经证明了在强偶联方案中光化学反应的猝灭，但事实证明它们的增强作用更加难以捉摸。在这里，通过国家的最先进的方法手段，我们展示了如何将反式$\to$在极化环境中，嵌入现实环境中的偶氮苯的顺式光异构化量子产率可能高于无空穴的情况。我们表征导致这种增强的机制，并讨论了将光平稳态推向不利的反应产物的条件。我们的结果提供了一个标志，即通过强耦合对光化学反应的控制可以从选择性猝灭扩展到提高量子产率。