Open fiber-based cavity for spectroscopix experiments in semiconductor quantum optics

用于半导体量子光学光谱实验的开放式光纤腔

• 批准号: 517518181
• 金额: --
• 依托单位: Technische Universität Dortmund
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2023
• 资助国家: 德国
• 起止时间: 2022-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/517518181?language=en
• 关键词: Open; fiber; based; cavity; spectroscopix

We apply for a stabilized open fiber cavity for investigations of semiconductor structures with respect to questions of quantum optics. The cavity will be used to reach the strong ligh-matter coupling regime in a long-term stable manner for a wide range of material systems at cryogenic temperatures below 5 K, while simultaneously granting spatial resolution in the nanometer range or better. The open cavity will be applied to a wide range of quantum optical investigations for a wide range of material systems, including Rydberg excitons, Perovskites, colloidal nanoplatelets and TMDCs. In detail, we will study (a) the scaling properties of Rydberg excitons in bulk crystals and microcrystals in the strong coupling regime. (b) the quantum states of polariton condensates based on TMDCs and perovskites. Measurements of photon statistics of the emission and quantum state tomography techniques are of interest here. (c) coupling properties of semiconductor quantum technologies. For example, the question whether quantum dots may be utilized as short-term quantum buffers for quantum light emitted from semiconductor structures. The precise tunability of the light-matter interaction strength within the open cavity will be highly beneficial for matching the bandwidth of the individual components of the quantum buffer. (d) the spatially resolved properties of hypersensitive transitions in passivated Lanthanum Oxide Layers, which are highly promising for quantum sensing applications. (e) spatially resolved spectroscopy on rare-earth sulfide thin films in order to develop a thorough understanding of the magneto-optical properties of this class of materials. The tunability of the cavity resonance, the mode volume and the investigated sample position make it possible to pursue fundamentally new approaches to quantum-optical questions especially in semiconductor systems for which is has been hard so far to reach the strong coupling regime due to huge technological challenges in creating high quality Bragg resonator structures. For these materials and also for materials where strong light-matter coupling could only be reached for limiting experimental conditions, it is to be expected that long-lasting coherence properties on the scale of nanoseconds may be realized, which corresponds to huge progress in terms of quantum-optical semiconductor spectroscopy.

我们申请稳定的开放纤维腔，以研究量子光学问题的半导体结构。该空腔将用于以长期稳定的方式以长期稳定的方式达到强大的耦合方案，以在低于5 K的低温温度下进行多种材料系统，同时在纳米范围或更高的纳米范围内同时授予空间分辨率。开放式空腔将用于广泛的量子光学研究，用于广泛的材料系统，包括Rydberg激子，perovskites，Collodal Nanoplatelets和TMDC。详细介绍，我们将研究（a）在强耦合方案中，在散装晶体和微晶中Rydberg激子的缩放特性。 （b）基于TMDC和钙钛矿的偏振子冷凝物的量子状态。这里感兴趣的发射和量子状态断层扫描技术的光子统计数据的测量值。 （c）半导体量子技术的耦合特性。例如，是否可以将量子点用作从半导体结构发出的量子光中用作短期量子缓冲液的问题。开放腔内光 - 物质相互作用强度的确切可调性将对匹配量子缓冲液单个组件的带宽非常有益。 （d）在钝化的氧化物层中超敏过渡的空间解析特性，这对于量子传感应用非常有前途。 （e）在稀土硫化物薄膜上进行了空间分辨光谱，以便对这类材料的磁光特性有透彻的理解。空腔共振，模式量和所研究样品位置的可调性使得从根本上寻求新的方法来进行量子 - 光学问题，尤其是在迄今为止的半导体系统中，由于在创建高质量的bragg soonator结构方面面临着巨大的技术挑战，因此很难达到强大的技术挑战。对于这些材料以及仅在限制实验条件下才能达到较强的光结合耦合的材料，可以预期，可以实现纳米红尺度上的持久相干性能，这与量子 - 光学半导体光谱的巨大进展相对应。