Coherent matter in semiconductor microcavities: non-equilibrium polariton condensates

半导体微腔中的相干物质：非平衡极化子凝聚体

• 批准号: EP/F040075/1
• 负责人: Richard Phillips
• 金额: $ 94.7万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF040075%2F1
• 关键词: Coherent; matter; semiconductor; microcavities; non

This project aims to investigate a completely new approach to creation of coherent matter in special semiconductor microcavities. We have already produced a theoretical model which strongly suggests that a non-equilibrium Bose-Einstein condensate may be produced in the interaction of specially tailored optical pulses with a microcavity containing quantum dots. We need to extend this model to include more realistic details of the physics, and to build an experiment which is capable of detecting the special signatures in the emission spectrum which would confirm the presence of the condensate in the microcavity. The theoretical work will extend the present understanding to include relevant physics such as multiple levels and disorder, as well as carefully mapping out the limits to the expected behaviour. The experiment will make it possible to carry out measurements of the optical emission from a microcavity under conditions in which the exciting light has a special frequency structure, and enters the cavity at an arbitrary angle. Likewise the emission can be sampled with sub-picosecond time resolution and collected at an arbitrary angle, so special effects such as the expected concentration of the condensate into the k=0 state can be probed through dynamical and angular signatures. The issues probed lie at the heart of studies of coherent matter, which increasingly appears to offer rich prospects both for new physics, and ultimately, new technologies.

该项目旨在调查一种全新的方法，以特殊的半导体微腔内创建相干物质。我们已经产生了一个理论模型，该模型强烈表明，在特殊定制的光学脉冲与含有量子点的微腔内的相互作用中，可能会产生非平衡的玻色 - 内斯坦冷凝物。我们需要扩展该模型，以包括物理学的更现实的细节，并构建一个能够检测发射光谱中特殊特征的实验，该实验将确认微腔中的冷凝物存在。理论工作将扩展当前的理解，以包括相关的物理，例如多重水平和混乱，并仔细映射到预期行为的限制。该实验将使您可以在刺激光具有特殊频率结构并以任意角度进入腔体的条件下从微腔内进行光学发射的测量。同样，发射可以用子秒时间分辨率进行采样并以任意角度收集，因此，可以通过动态和角度特征来探测诸如冷凝水到K = 0状态的预期浓度等特殊效果。这些问题的核心是相干问题研究的核心，这似乎为新物理学以及最终的新技术提供了丰富的前景。

项目成果

BEYOND BOSE-EINSTEIN CONDENSATION OF POLARITONS: QUANTUM CONDENSATION WITHOUT RELAXATION IN SEMICONDUCTOR MICROCAVITIES

超越极化子的玻色-爱因斯坦凝聚：半导体微腔中无弛豫的量子凝聚

• 作者: Paul Eastham (Co-Author)

Quantum condensation from a tailored exciton population in a microcavity

微腔中定制的激子群的量子凝聚

• DOI: 10.1103/physrevb.79.165303
• 发表时间: 2009
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Eastham P

Adiabatic state preparation of interacting two-level systems

相互作用的两能级系统的绝热状态准备

• DOI: 10.48550/arxiv.1202.6626
• 发表时间: 2012
• 作者: Brierley R