Department of Physics, King's College London , Strand, London WC2R 2LS, United Kingdom.
CNR-Istituto Nanoscienze, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT) , via Arnesano, I-73100 Lecce, Italy.
ACS Nano. 2016 Jun 28;10(6):6125-30. doi: 10.1021/acsnano.6b02057. Epub 2016 Jun 3.
Nanoscale generation of individual photons in confined geometries is an exciting research field aiming at exploiting localized electromagnetic fields for light manipulation. One of the outstanding challenges of photonic systems combining emitters with nanostructured media is the selective channelling of photons emitted by embedded sources into specific optical modes and their transport at distant locations in integrated systems. Here, we show that soft-matter nanofibers, electrospun with embedded emitters, combine subwavelength field localization and large broadband near-field coupling with low propagation losses. By momentum spectroscopy, we quantify the modal coupling efficiency identifying the regime of single-mode coupling. These nanofibers do not rely on resonant interactions, making them ideal for room-temperature operation, and offer a scalable platform for future quantum information technology.
在受限几何结构中生成单个光子的纳米级规模是一个令人兴奋的研究领域，旨在利用局域电磁场来进行光的操控。在将发射器与纳米结构介质相结合的光子系统中，一个突出的挑战是将嵌入源发射的光子有选择地引导到特定的光学模式中，并在集成系统中的远距离传输。在这里，我们展示了与嵌入式发射器一起电纺的软物质纳米纤维，将亚波长场局域化和宽带近场耦合与低传播损耗结合在一起。通过动量光谱学，我们通过定量分析模式耦合效率来确定单模耦合的区域。这些纳米纤维不依赖于共振相互作用，使其成为在室温下运行的理想选择，并为未来的量子信息技术提供了一个可扩展的平台。
