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Revisiting strong coupling between a single molecule and surface plasmons

机译:重新探讨单个分子与表面等离子体激元之间的强耦合

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摘要

Strong coupling between a single molecule and surface plasmons is reexamined with a microscopic classical formulation in local and nonlocal responses of metal. In the case of local response, we show that strong single molecule-plasmon coupling can occur in the UV range for a silver particle with a molecule-metal separation of 1 nm or smaller, where the real part of the dielectric function of silver approaches -1. With the nonlocal response consideration, strong coupling happens at shorter molecule-metal distances. The result shows that Rabi splitting can occur even without a resonator.
机译:用微观经典公式重新检查了单个分子与表面等离子体激元之间的强耦合,以了解金属的局部和非局部响应。在局部响应的情况下,我们表明分子与金属的间距为1 nm或更小的银粒子在UV范围内会发生强的单分子-等离子体耦合,其中银的介电功能的实部接近- 1。考虑到非局部响应,强耦合发生在较短的分子-金属距离处。结果表明,即使没有谐振器,也会发生拉比分裂。

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