Spin-dependent polariton scattering and all-optical control of transverse patterns in semiconductor microcavities

半导体微腔中横向图案的自旋相关极化子散射和全光控制

• 批准号: 196330061
• 负责人: Professor Dr. Stefan Schumacher
• 金额: --
• 依托单位: Arbeitsgruppe Theoretische Optoelektronik & Photonik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/196330061?language=en
• 关键词: Spin; dependent; polariton; scattering; optical

This project is focussed on the formation and optical control of patterns in coherently driven microcavity polariton systems. Quantum-well based semiconductor microcavites are spatially homogeneous in the quantum-well plane. Plane-wave pump excitation in normal incidence does not spoil the translational and rotational symmetry in the plane. Nevertheless, for pump excitation spectrally above the lower polariton branch, the system can spontaneously break its symmetry and show a spatially non-homogeneous nonlinear optical response: above a certain pump threshold intensity, stimulated off-axis scattering of pump-induced polaritons overcomes the intrinsic losses in the off-axis modes such that off-axis signals spontaneously build up and are emitted from the cavity under a finite angle. It is the purpose of this project to study in detail the resulting self-organization in the driven nonlinear system and related pattern formation. Important insights were already obtained in the first funding period of this project. In the project continuation we will particularly focus on spin-dependent aspects of the pattern formation. Aim is to achieve a deep understanding of the underlying microscopic physics and explore how spinor effects can be used to control the patterns, e.g., for all-optical switching. Our theoretical work will be done closely together with our experimental collaborators.

本项目致力于相干驱动微腔偏振系统中图案的形成和光学控制。量子井基半导体微腔在量子井面上是空间均匀的。平面波泵浦在垂直入射时不破坏平面内的平移和旋转对称性。然而，对于位于下极化子分支上方的泵浦激发，系统可以自发地破坏其对称性，表现出空间非均匀的非线性光学响应：在一定的泵浦阈值强度以上，受激离轴散射克服了离轴模式的本征损耗，使得离轴信号自发积累并在有限角度下从腔中发射。本项目的目的是详细研究在驱动的非线性系统中产生的自组织及其相关图案的形成。在该项目的第一个资助期已经获得了重要的见解。在项目的继续中，我们将特别关注图案形成的与自旋相关的方面。目的是实现对基本微观物理的深入理解，并探索如何利用旋量效应来控制图案，例如用于全光开关。我们的理论工作将与我们的实验合作者密切合作。

项目成果

Polarization dependence of nonlinear wave mixing of spinor polaritons in semiconductor microcavities

半导体微腔中自旋极化子非线性波混合的偏振依赖性

• DOI: 10.1103/physrevb.94.045308
• 发表时间: 2016
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: P. Lewandowski;O. Lafont;E. Baudin;C. Y. Tsang;P. T. Leung;S. M. H. Luk;E. Galopin;A. Lemaitre;J. Bloch;J. Tignon;Ph. Roussignol;N. H. Kwong;R. Binder;S. Schumacher
• 通讯作者: S. Schumacher

Externally controlled Lotka-Volterra dynamics in a linearly polarized polariton fluid.

• DOI: 10.1103/physreve.101.012207
• 发表时间: 2019-03
• 期刊: Physical review. E
• 作者: Matthias Pukrop;S. Schumacher

Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum Fluid.

极化量子流体中光控轨道角动量的产生

• DOI: 10.1103/physrevlett.119.113903
• 发表时间: 2017
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: S. M. H. Luk;N. H. Kwong;P. Lewandowski;S. Schumacher;R. Binder
• 通讯作者: R. Binder

Theory of optically controlled anisotropic polariton transport in semiconductor double microcavities

• DOI: 10.1364/josab.35.000146
• 发表时间: 2017-05
• 期刊: Journal of The Optical Society of America B-optical Physics
• 影响因子: 1.9
• 作者: S. Luk;P. Lewandowski;N. Kwong;E. Baudin;O. Lafont;J. Tignon;P. Leung;Chiu-wah Chan;M. Babilon;S. Schumacher;R. Binder

Optical switching of polariton density patterns in a semiconductor microcavity

• DOI: 10.1088/1402-4896/aa58f6
• 发表时间: 2017-02
• 期刊: Physica Scripta
• 影响因子: 2.9
• 作者: N. Kwong;C. Tsang;S. Luk;Y. Tse;Ch. K. P. Chan;P. Lewandowski;P. Leung;S. Schumacher;R. Binder