Control of non-classical light states by linear and non-linear interaction in hybrid systems of single semiconductor quantum dots and alkali atomic vapor

单半导体量子点和碱原子蒸气混合系统中线性和非线性相互作用对非经典光态的控制

• 批准号: 281308554
• 负责人: Dr. Robert Löw
• 金额: --
• 依托单位: Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/281308554?language=en
• 关键词: Control; non; classical; light; states

The central aim of the proposed research project is the realization and detailed investigation of new hybrid concepts and schemes which provide control to generate and/or manipulate non-classical states of light by distinct interaction between photons emitted from single semiconductor-quantum dots (QDs) and alkali atomic vapor as the control medium. The fundamental basis for all planned investigations is the generation of spectrally narrow-band resonance fluorescence (RF) from individual single Indium-Gallium-Arsenide (InGaAs)-QDs as a source of photons which can be brought to controlled interaction with the optical resonances of atomic cesium (133Cs) at ~894 nm (D1 hyperfine structure quadruplet). One important prerequisite for sophisticated QD-atom interaction experiments will be a precise tuning capability of RF with respect to the fixed atomic reference frequencies of the D1 hyperfine structure. The efficiency of (non-)linear interactions will critically depend on the mutual spectral similarity between the photon source and the spectral response characteristics of the thermal atomic gas, dominated by Doppler broadening, which acts as the control medium. Therefore, another very important aspect will be to gain flexible control on the RF emission linewidth in order to adjust its bandwidth to the atomic transitions. In this project, we plan to utilize different conditioning techniques, i.e. (a) deterministic pi-pulsed optical QD excitation, (b) direct generation of ultra-narrowband sub-Poissonian RF by coherent, elastic photon scattering on a single QD in the weak excitation regime (Heitler regime), and (c) spectral post-filtering of single-QD RF from the regimes of pi-pulsed and also cw-dressed emission above saturation. This can be achieved by using a specially designed high-finesse Fabry-Pérot interferometer, or alternatively, for the first time in combination with QD-RF, the technique of FADOF-type (Faraday anomalous dispersion optical filter) transmission filtering. Using such conditioned photons, the anticipated goals of the project focus on fundamental applications in the field of optical quantum information processing. One of our aimed applications will be controlled single-photon storage and delay by generation of slow light within the strongly dispersive frequency regime between selected Cs-D1 resonances and storage via an off-resonant Raman-scheme. The second major goal of the project focuses at the manipulation of stored photons and the generation of higher-order photon number (Fock) states by using cesium atomic vapor in combination of highly excited Rydberg gas medium with controllably attractive or repulsive atom-atom interaction. A Rydberg gas can act e.g., as an optical transistor for two individual photons to merge into a common mode channel. The effect of photon-photon scattering can be controlled externally by an appropriate Rydberg pump laser for the atomic medium.

拟议的研究项目的核心目的是实现和详细投资新的混合概念和方案，这些概念和方案提供了控制和/或操纵非古典光状态，通过从单个半导体 - 量词点（QDS）发出的照片之间的明显相互作用（QDS）和Alkali Atomic Atomic Vapor作为对照介质。所有计划投资的基本基础是从单个单个单个im依剂 - 艾式 - 阿森尼（INGAAS）-QD的频谱狭窄的共振荧光（RF）的产生，作为照片的来源，可以与原子纤维（133cs）的光学共振进行控制，以控制〜894 nm nm nm nm nm nm（d1 hyper flut）。复杂的QD-ATOM相互作用实验的一个重要先决条件是RF相对于D1超细结构的固定原子参考频率的精确调整能力。 （非）线性相互作用的效率将严重取决于光子源和热原子气体的光谱响应特性之间的相互光谱相似性，该特性由多普勒拓宽主导，多普勒拓宽是对照培养基的。因此，另一个非常重要的方面将是对RF发射线宽的灵活控制，以便将其带宽调整为原子过渡。在这个项目中，我们计划利用不同的调理技术，即（a）确定性的PI脉冲光学QD兴奋，（b）直接生成超鼻涕的次 - 波多桑尼亚rf，通过相干，弹性光子散射在弱兴奋体（Heitler）和（Heitler post）的单个QD上的弹性光子散射，以及（C）的单身范围 - PI脉冲以及超过满意度的CW压缩发射。这可以通过使用特殊设计的高finity fabry-pérot干涉仪，或者首次与QD-RF结合使用，QD-RF是Fadof-type（Faraday Anomalous Excererion光学滤波器）透射滤波的技术。使用此类条件照片，该项目的预期目标集中于光学量子信息处理领域的基本应用。我们的目标应用程序之一将受到单光量存储的控制，并通过在选定的CS-D1共振和通过非谐振的Raman-Scheme储存之间产生慢光的延迟延迟。该项目的第二个主要目标集中在操纵存储的照片和通过使用Cesium Atomic Vapor与令人兴奋的Rydberg Gas介质结合使用，并具有可控的有吸引力的原子 - 原子 - 原子与原子的交互作用。 rydberg气体可以用作两个单独照片的光学晶体管，以合并为公共模式通道。光子光子散射的效果可以通过适当的rydberg泵激光对原子介质进行控制。

项目成果

Characterization of spectral diffusion by slow-light photon-correlation spectroscopy

• DOI: 10.1103/physrevb.101.161401
• 发表时间: 2020-04
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: H. Vural;J. Maisch;I. Gerhardt;M. Jetter;S. Portalupi;P. Michler

Two-photon interference in an atom–quantum dot hybrid system

原子量子点混合系统中的双光子干涉

• DOI: 10.1364/optica.5.000367
• 发表时间: 2018
• 作者: H. Vural;S. L. Portalupi;J. Maisch;S. Kern;J. H. Weber;M. Jetter;J. Wrachtrup;R. Löw;I. Gerhardt;P. Michler
• 通讯作者: P. Michler

Controllable Delay and Polarization Routing of Single Photons

单光子的可控延迟和偏振路由

• DOI: 10.1002/qute.201900057
• 发表时间: 2019
• 期刊: Advanced Quantum Technologies
• 影响因子: 4.4
• 作者: J. Maisch;H. Vural;M. Jetter;P. Michler;I. Gerhardt;S. L. Portalupi
• 通讯作者: S. L. Portalupi