近零介电常数材料中三次谐波产生的量子理论

中文摘要 AI 辅助

我们提出了一种基于格林张量量子化方法的理论框架，用于描述近零介电常数（ENZ）材料中的三次谐波产生，并推导了产生效率的解析闭式解。我们将该模型与低泵浦强度下30 nm厚ITO纳米层的波长和角分辨三次谐波产生效率的实验测量结果进行了验证，该测量是在未耗尽泵浦近似下描述的。我们的结果为色散且有损耗的ENZ介质中的量子非线性过程提供了一个局域且标量的有效模型，并建立了一个简单可靠的框架，用于研究各种非线性光学现象，其应用涉及量子传感、量子信息和量子非破坏测量。

英文摘要

We present a theoretical framework, based on the Green's tensor quantization method, to describe third-harmonic generation in epsilon-near-zero (ENZ) materials and derive analytical, closed-form solutions for the generation efficiency. We validate our model against experimental measurements of wavelength- and angle-resolved third-harmonic generation efficiency from 30 nm-thin ITO nanolayers at low pump intensity, described under the undepleted pump approximation. Our results provide a local and scalar effective model for quantum nonlinear processes in dispersive and lossy ENZ media, and establishes a simple and reliable framework for investigating a variety of nonlinear optical phenomena with applications to quantum sensing, quantum information, and quantum nondemolition measurements.

发表机构

• Tampere University（坦佩雷大学）
• Boston University（波士顿大学）

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