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EAGER: Enabling Quantum Leap: Towards Room Temperature Quantum Logic Using Moire Heterostructure Single Quantum Emitters Coupled to Plasmonic Waveguides

EAGER：实现量子飞跃：使用莫尔异质结构单量子发射器耦合到等离子体波导实现室温量子逻辑

基本信息

批准号：
1838378
负责人：
Brian LeRoy
金额：
$ 30万
依托单位：
University of Arizona
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：
2018-07-15 至 2021-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1838378&HistoricalAwards=false
关键词：
EAGER Enabling Quantum Leap Towards

项目摘要

Nontechnical description: Quantum mechanical systems have the potential to lead to transformative advances in communication, sensing and computing technologies. However, these quantum information technologies require the creation of novel materials to enable their full potential. Recently two-dimensional materials have emerged as a promising platform as their properties can be easily tailored through control of their constituent atoms, electrical interactions, and interactions between layers of the material. One promising avenue for quantum information processing is through the use of light sources that produce individual photons on demand. However, there are several drawbacks that need to be overcome before these are technologically feasible, including the fabrication, placement and control of such light sources. This project aims to create a room-temperature-operating scalable single-photon-source platform, opening the way to quantum information processing technologies that are currently not possible because they require cryogenic temperatures to operate. Beyond the significant impact that this research has on technology, it also provides interdisciplinary training for two graduate students in the areas of materials synthesis, nanofabrication, scanning probe microscopy and optics. Technical description: This interdisciplinary project seeks to create a scalable room-temperature quantum logic architecture composed of single quantum emitters intrinsic to 2D materials heterostructures coupled to plasmonic waveguides. In particular, the lattice mismatch and twist angle between two transition metal dichalcogenide monolayers leads to a moire pattern with a periodic arrangement of potential minima. Using a heterostructure of WSe2 and MoSe2 allows a long wavelength moire pattern to be created, thanks to a close match between lattice constants. In each of the potential minima, a single exciton can be trapped with a well-defined intrinsic confinement potential, leading to the creation of a single quantum emitter. The excitons consist of an electron in one layer and a hole in the other layer. By uniquely controlling the twist angle between layers, the confinement potential of the exciton can be changed and the spacing between them also controlled, allowing the deterministic placement of the single quantum emitters. These emitters are then coupled to the electromagnetic field of propagating surface plasmon polaritons using plasmonic nanostructures. This coupling of surface plasmon polaritons and single quantum emitters is subsequently used for a room-temperature single photon transistor platform.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.

非技术性描述：量子力学系统有可能导致通信、传感和计算技术的变革性进步。然而，这些量子信息技术需要创造新的材料才能充分发挥其潜力。最近，二维材料已经成为一个有前途的平台，因为它们的性质可以通过控制其组成原子，电相互作用和材料层之间的相互作用来轻松定制。量子信息处理的一个有前途的途径是通过使用按需产生单个光子的光源。然而，在这些技术可行之前，存在需要克服的若干缺点，包括这种光源的制造、放置和控制。该项目旨在创建一个室温操作的可扩展单光子源平台，为量子信息处理技术开辟道路，这些技术目前尚不可能，因为它们需要低温才能运行。除了这项研究对技术的重大影响外，它还为两名研究生提供了材料合成，纳米纤维，扫描探针显微镜和光学领域的跨学科培训。技术说明：这个跨学科的项目旨在创建一个可扩展的室温量子逻辑架构，该架构由耦合到等离子体波导的二维材料异质结构固有的单个量子发射器组成。特别地，两个过渡金属二硫属化物单层之间的晶格失配和扭转角导致具有电势最小值的周期性排列的莫尔图案。由于晶格常数之间的紧密匹配，使用WSe 2和MoSe 2的异质结构允许产生长波长莫尔图案。在每个势极小值中，单个激子可以被定义明确的本征限制势捕获，从而导致单个量子发射体的产生。激子由一层中的电子和另一层中的空穴组成。通过唯一地控制层之间的扭转角，可以改变激子的限制势，并且还控制它们之间的间距，从而允许确定性地放置单量子发射器。然后，这些发射器使用等离子体纳米结构耦合到传播表面等离子体激元的电磁场。这种表面等离子激元和单量子发射体的耦合随后被用于室温单光子晶体管平台。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。