Long-range propagation of Bloch surface wave polaritons in ZnO

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-11-18 DOI:10.1063/5.0233279

S. Henn, A. Müller, M. Grundmann, C. Sturm

引用次数: 0

Abstract

Strongly coupled exciton-polaritons can be observed in a wide variety of systems and exhibit remarkable properties due to their small mass, compared to that of electrons, and their bosonic nature. This allows to study quantum condensates and can be exploited for photonic integrated circuits. For the latter one, the small propagation length of the polaritons in microcavities often comprises a limiting factor. By using evanescent guided modes as the photonic component instead of cavity photons, the polaritons inherit longer lifetimes. In this work, we report on the observation of propagating polaritons, consisting of interacting Bloch surface waves and excitons in ZnO, at room temperature and find energy dependent propagation lengths of up to 100 μm. These results open the path to applying Bloch polaritons in on-chip polaritonic devices requiring macroscopic propagation at or above room temperature.

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氧化锌中布洛赫表面波极化子的长程传播

强耦合激子-极化子可以在多种系统中观察到，由于其质量（与电子相比）较小，且具有玻色性，因此表现出非凡的特性。这使得研究量子凝聚物成为可能，并可用于光子集成电路。就后者而言，极化子在微腔中的传播长度较小，这往往是一个限制因素。通过使用蒸发导引模式代替腔光子作为光子元件，极化子可以继承更长的寿命。在这项工作中，我们报告了在室温下观察到的由相互作用的布洛赫表面波和氧化锌中的激子组成的传播极化子，并发现其传播长度与能量有关，可达 100 μm。这些结果为将布洛赫极化子应用于需要在室温或室温以上进行宏观传播的片上极化器件开辟了道路。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.