Tailoring directivity of two-photon spontaneous emission using plasmonic nanoantennas.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-03-15 DOI:10.1364/OL.539545

Steve Smeets, Bjorn Maes, Gilles Rosolen

引用次数: 0

Abstract

We report nanoantenna designs that emit entangled photons of distinct energy from two-photon spontaneous emission (TPSE) in different far-field directions with high quantum efficiency. To model the designs, we use a framework that computes the TPSE spectra of a quantum emitter near arbitrarily shaped nanostructures via the classical computation of the one-photon Purcell factors. A first structure exploits both the dipolar and the quadrupolar mode on a single silver nanorod. A second geometry employs dipolar modes on two perpendicular nanorods. An efficient and directional functionality is useful to develop highly compact, integrated entangled two-photon sources.

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我们报告了纳米天线设计，这些天线能以高量子效率在不同的远场方向发射双光子自发辐射（TPSE）产生的不同能量的纠缠光子。为了给这些设计建模，我们使用了一个框架，通过经典的单光子珀塞尔因子计算方法，计算任意形状纳米结构附近量子发射器的 TPSE 光谱。第一种结构利用了单个银纳米棒上的双极性和四极性模式。第二种几何结构在两个相互垂直的纳米棒上采用了双极性模式。这种高效的定向功能有助于开发高度紧凑的集成纠缠双光子源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.