RAISE-TAQS: Integrated Room Temperature Single-Photon based Quantum-Secure LiFi Systems

RAISE-TAQS：集成室温单光子量子安全 LiFi 系统

• 批准号: 1839196
• 负责人: Debdeep Jena
• 金额: $ 100万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-12-01 至 2023-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1839196&HistoricalAwards=false
• 关键词: RAISE; TAQS; Integrated; Room; Temperature

Gallium Nitride based LEDs have revolutionized solid-state lighting. Because unlike incandescent bulbs, LEDs can be switched and modulated at GHz frequencies, they are enabling light fidelity (LiFi) as a means of point to point communications using visible light in free space. LiFi is similar to WiFi, but its penetration is expected to rival, or exceed WiFi as GaN LEDs replace residential, industrial, street, and automotive lighting. Making free- space LiFi communication secure in the quantum sense in the future is both a timely opportunity, and of paramount technological importance. Secure communication systems are possible using the quantum properties of single-photons that prevent eavesdropping, and guarantee security. A successful demonstration of the devices and systems proposed in this research would not just enhance security in the rapidly emerging LiFi networks but also make quantum technologies come out from the research labs and reach people's houses. The proposed research is therefore highly transformative. In addition, the strong emphasis on material and device physics, optical and quantum sciences, and communication networks will all provide a rich set of areas for exploration and graduate student research. Technical: The PIs of this proposal have discovered single photon sources in wide-bandgap nitrides that are 20x brighter than the NV centers in diamond, and importantly, operate at room temperature. They have developed a fundamentally new structure for nitride LEDs using buried tunnel junctions, with which it becomes possible to electrically pump the single photon emitter. The engineering-led goals of the proposed project are threefold: (a) To build the first room-temperature electrically pumped on-demand single photon source completely integrated on the GaN material system, (b) To design and characterize the spectral properties, bandwidth, efficiency, packing density, and potential entanglement properties of the nitride single photon sources, and (c) To theoretically and experimentally identify and test the fundamental requirements, and limits of quantum-secure LiFi communication systems. This project explores and exploits the physics of single photon emitters, advances in quantum materials, and secure LiFi systems design and engineering, leading to the implementation quantum Lifi in a practical way. Every step in this quest will accelerate the development and deployment of quantum technologies. The team will systematically explore the basic physics of h-BN quantum emitters and III-nitride quantum dots, their emission rates and wavelengths, and how we can create these emitters deterministically. The Pis seek to discover how to integrate bright III-nitride LED structures with quantum emitters and efficiently gather the quantum and classical light in separate channels. Finally, they will engineer these devices in a real-world context and deploy them to ensure private communications guaranteed by the laws of quantum physics. New nitride quantum crystalline materials are key to this proposal. A meaningful international collaboration is proposed with a leading nitride materials group in the world will offer some of the highest quality gallium nitride crystals in the world.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

基于氮化镓的 LED 彻底改变了固态照明。由于与白炽灯泡不同，LED 可以在 GHz 频率下进行开关和调制，因此它们可以实现光保真度 (LiFi) 作为在自由空间中使用可见光进行点对点通信的手段。 LiFi 与 WiFi 类似，但随着 GaN LED 取代住宅、工业、街道和汽车照明，其渗透率预计将与 WiFi 相媲美或超过 WiFi。未来确保自由空间 LiFi 通信在量子意义上的安全不仅是一个及时的机遇，而且具有至关重要的技术重要性。利用单光子的量子特性可以防止窃听并保证安全，从而实现安全通信系统。本研究中提出的设备和系统的成功演示不仅可以增强快速新兴的 LiFi 网络的安全性，还可以使量子技术走出研究实验室并走进千家万户。因此，拟议的研究具有高度变革性。此外，对材料和器件物理、光学和量子科学以及通信网络的高度重视都将为探索和研究生研究提供丰富的领域。技术：该提案的 PI 发现了宽带隙氮化物中的单光子源，其亮度比金刚石中的 NV 中心亮 20 倍，而且重要的是，它可以在室温下运行。他们使用埋入隧道结开发了一种全新的氮化物 LED 结构，通过这种结构可以电泵浦单光子发射器。该项目以工程为主导的目标有三个：(a) 构建第一个完全集成在 GaN 材料系统上的室温电泵按需单光子源，(b) 设计和表征光谱特性、带宽、氮化物单光子源的效率、堆积密度和潜在纠缠特性，以及 (c) 从理论上和实验上确定和测试量子安全 LiFi 通信系统的基本要求和限制。该项目探索和利用单光子发射器的物理原理、量子材料的进步以及安全的 LiFi 系统设计和工程，从而以实用的方式实现量子 Lifi。这一探索的每一步都将加速量子技术的开发和部署。该团队将系统地探索 h-BN 量子发射器和 III 族氮化物量子点的基础物理、它们的发射速率和波长，以及我们如何确定性地创建这些发射器。 Pis 致力于探索如何将明亮的 III 族氮化物 LED 结构与量子发射器集成，并在不同的通道中有效地收集量子光和经典光。最后，他们将在现实世界中设计这些设备并部署它们，以确保量子物理定律保证私人通信。新型氮化物量子晶体材料是该提案的关键。提议与世界领先的氮化物材料集团进行有意义的国际合作，将提供世界上一些最高质量的氮化镓晶体。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和技术进行评估，被认为值得支持。更广泛的影响审查标准。

项目成果

High Internal Quantum Efficiency from AlGaN-delta-GaN Quantum Well at 260 nm

AlGaN-delta-GaN 量子阱在 260 nm 处具有高内部量子效率

• DOI: 10.1364/cleo_at.2020.af1i.2
• 发表时间: 2020-01
• 期刊: Conference on Lasers and Electro-Optics
• 作者: Liu, Cheng;Lee, Kevin;Harden, Galen;Hoffman, Anthony;Xing, Huili;Jena, Debdeep;Zhang, Jing
• 通讯作者: Zhang, Jing

Rotationally aligned hexagonal boron nitride on sapphire by high-temperature molecular beam epitaxy

通过高温分子束外延在蓝宝石上旋转排列的六方氮化硼

• DOI: 10.1103/physrevmaterials.3.064001
• 发表时间: 2019-06-04
• 期刊: Physical Review Materials
• 影响因子: 3.4
• 作者: R. Page;Yongjin Cho;J. Casamento;S. Rouvimov;H. Xing;D. Jena
• 通讯作者: D. Jena

Blue (In,Ga)N light-emitting diodes with buried n + – p + tunnel junctions by plasma-assisted molecular beam epitaxy

等离子体辅助分子束外延法制备具有掩埋n-p隧道结的蓝色(In,Ga)N发光二极管

• DOI: 10.7567/1347-4065/ab1e78
• 发表时间: 2019-06
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: Cho, YongJin;Bharadwaj, Shyam;Hu, Zongyang;Nomoto, Kazuki;Jahn, Uwe;Xing, Huili Grace;Jena, Debdeep
• 通讯作者: Jena, Debdeep

Room temperature optically detected magnetic resonance of single spins in GaN

室温光学检测 GaN 单自旋磁共振

• DOI: 10.1038/s41563-024-01803-5
• 发表时间: 2024-02
• 期刊: Nature Materials
• 影响因子: 41.2
• 作者: Luo, Jialun;Geng, Yifei;Rana, Farhan;Fuchs, Gregory D.
• 通讯作者: Fuchs, Gregory D.

Enhanced injection efficiency and light output in bottom tunnel-junction light-emitting diodes

增强底部隧道结发光二极管的注入效率和光输出

• DOI: 10.1364/oe.384021
• 发表时间: 2020-02
• 期刊: Optics Express
• 影响因子: 3.8
• 作者: Bharadwaj, Shyam;Miller, Jeffrey;Lee, Kevin;Lederman, Joshua;Siekacz, Marcin;Xing, Huili;Jena, Debdeep;Skierbiszewski, Czesław;Turski, Henryk
• 通讯作者: Turski, Henryk