Fibre Wavelength Quantum Light Sources

光纤波长量子光源

• 批准号: EP/M508275/1
• 负责人: Jon Heffernan
• 金额: $ 12.8万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM508275%2F1
• 关键词: Fibre; Wavelength; Quantum; Light; Sources

The Sheffield team and the National Centre for III-V technologies will develop quantum dot single photon emitters forQuantum Communications. The overall project aims are to demonstrate the controlled emission of entangled photons froman LED structure emitting at a fibre-compatible wavelengths. Devices operating at this wavelength will be required toachieve commercially significant Quantum Communications technologies. There is a significant epitaxy challenge indeveloping this technology by Metal Organic Vapour Phase Epitaxy (MOVPE) at these wavelengths and there have beenno demonstrations of entangled LEDs to date.The Sheffield team will develop Indium Arsenide on Indium Phosphide quantum dots by MOVPE , complementing andcontrasting with the development by the Molecular Beam Epitaxy (MBE) method in the Cavendish laboratory. Todemonstrate single photon emitters at these wavelengths is challenging and there is a need to investigate the properties ofthe quantum dots by both techniques to understand how the quantum dots form and what controls the fundamentalproperties that will generate photon entanglement; including aspects such as the exciton spin splitting value. The work willbuild significantly on the prior work carried out at shorter wavelengths in Sheffield, Toshiba and Cavendish laboratoriesusing a different material system. In particular at Sheffield the result of quantum dot structures developed under an EPSRCProgramme Grant will benefit the project strongly since many of the physical properties may be similar. The demonstrationof high quality devices at this wavelength will be a significant milestone in matching Quantum Communications to thecurrent non-quantum fibre-communications infrastructure.

Sheffield团队和国家III-V技术中心将开发量子点单光子发射器ForQuantum Communications。总体项目的目的是证明在纤维兼容波长下排放的纠缠光子的受控发射。在此波长下运行的设备将被要求用于商业上重要的量子通信技术。在这些波长下，金属有机蒸气相位外径（MOVPE）在这项技术方面存在着重大的外套挑战，并且迄今为止，纠缠的LED尚无证明。Sheffield团队将通过Movpe，Movpe和Movement conterment the Sprastimal epitish a Solecrand（Morecular epitifor）（Morecular epiT）在磷化物量子点上开发砷化鉴赏剂。在这些波长处的单个光子发射器很具有挑战性，并且有必要通过两种技术研究量子点的特性，以了解量子点如何形成以及如何控制会产生光子纠缠的基本范围。包括诸如激子旋转分裂值之类的方面。这项工作将大量建立在先前在谢菲尔德，东芝和卡文迪许实验室的较短波长上进行的工作。特别是在谢菲尔德，在EPSRCPROGRAGME赠款下开发的量子点结构的结果将使项目受益，因为许多物理特性可能相似。该波长的高质量设备的示范将是将量子通信与thecurrent非Quantum纤维通信基础设施相匹配的重要里程碑。

项目成果

InAs/InP Quantum Dots in Etched Pits by Droplet Epitaxy in Metalorganic Vapor Phase Epitaxy

• DOI: 10.1002/pssr.202000173
• 发表时间: 2020-06
• 期刊: physica status solidi (RRL) – Rapid Research Letters
• 作者: E. Sala;Young In Na;M. Godsland;A. Trapalis;J. Heffernan

Coherence in single photon emission from droplet epitaxy and Stranski-Krastanov quantum dots in the telecom C-band

• DOI: 10.1063/5.0032128
• 发表时间: 2021-01-04
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Anderson, M.;Mueller, T.;Shields, A. J.
• 通讯作者: Shields, A. J.

Universal Growth Scheme for Quantum Dots with Low Fine-Structure Splitting at Various Emission Wavelengths

• DOI: 10.1103/physrevapplied.8.014013
• 发表时间: 2017-07-14
• 期刊: PHYSICAL REVIEW APPLIED
• 影响因子: 4.6
• 作者: Skiba-Szymanska, Joanna;Stevenson, R. Mark;Shields, Andrew J.
• 通讯作者: Shields, Andrew J.