EAGER: Enabling Quantum Leap: Room temperature Quantum Logic operations Enabled by Quantum Emitter Arrays in 2D artificial Superlattices

非技术摘要：二维(2D)晶体是一种厚度只有几纳米的新型材料。最近的研究表明，与其他已知材料相比，这些材料具有独特的优势，它们具有在新一代电子、能源转换和存储应用中产生巨大影响的潜力。当这些2D晶体堆叠在一起时，它们形成了一种被称为2D莫尔超晶格的材料，它具有一种不同寻常的物理性质，可能会使量子计算成为可能。这种材料可能会给当前的信息技术带来革命性变化。这项研究旨在利用先进的光学测量技术对2D莫尔超晶格的光学行为达成基本的理解，并开发最先进的制造技术来创建用于操纵量子信息的纳米级器件。科研活动对培养下一代科研人员具有重要影响。博士生、硕士生以及本科生进行所有必要的实验，参与实践研究活动。研究团队正在制作YouTube视频：自然、科学和工程中的莫尔图案和2D莫尔超晶格和2D晶体，以接触普通公众和科学/技术爱好者。令人振奋的成果也通过会议报告、期刊出版物和科学评论文章分享。技术摘要：量子发射器强耦合到单光子级别的腔，对量子逻辑来说是必不可少的。然而，由于传统量子发射器和光学腔之间的耦合强度有限，在室温下实现这一目标面临着巨大的挑战。这项研究探索了作为单光子发射体的莫尔量子发射体(Moire-QE)的量子光学，以及它们与Fano介电超真空的集成，从而允许在量子逻辑操作中操纵相干态。研究项目包括：i)通过CVD和MBE方法合成光学级、高结晶度和原子清洁的长寿命莫尔量子点，ii)研究莫尔量子点的量子光学，以确定其在量子逻辑操作中的潜力；iii)设计低损耗、高Q和大拉比能量分裂元，制作它们，并将它们与莫尔量子点集成以实现量子逻辑操作；以及iv)非线性效应的研究和交叉相位调制的演示。这项研究有望为创建大周期云纹量子效率以及理解它们与单光子非线性有关的行为奠定坚实的基础。此外，该项目旨在确定通往潜在可扩展量子系统设计的明确途径，研究室温量子光学非线性效应，以及量子态操纵。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更广泛的影响审查标准进行评估，被认为值得支持。

Non-technical abstract: Two-dimensional (2D) crystals are a new class of materials that measure only a few nanometers in thickness. Recent studies have shown that these materials offer unique advantages over other known materials, and that they hold the potential to make a large impact in new-generation electronics, energy conversion, and storage applications. When these 2D crystals are stacked onto each other they form a material known as a 2D Moire superlattice, which possesses an unusual physical properties that may enable quantum computation. Such materials could revolutionize current information technologies. This research aims to reach a fundamental understanding of the optical behavior of 2D Moire superlattices using advanced optical measurement techniques, as well as develop state-of-the-art fabrication techniques to create nanoscale devices for manipulation of quantum information. The research activities have significant impact on training of next-generation researchers. Doctoral and master students, as well as undergraduates conduct all the necessary experiments, participating in hands-on research activities. The research team is preparing YouTube videos: 'Moire patterns in the nature, science, and engineering' and '2D Moire superlattices and 2D crystals', to reach out to the general public and science/technology enthusiasts. Exciting results are also shared through conference presentations, journal publications, and scientific review articles. Technical abstract: A quantum emitter strongly coupled to a cavity that operates down to the single-photon level is essential for quantum logic. Yet, there have been big challenges to achieve this at room temperature due to the limited coupling strength between conventional quantum emitters and optical cavities . This research explores the quantum optics of Moire quantum emitters (Moire-QEs) as single-photon emitters and their integration with Fano-dielectric metacavities, allowing manipulation of coherent states in quantum logic operations. The research projects include; i) the synthesis of optical grade, highly crystalline, and atomically clean Moire superlattices sustaining long-lived Moire-QEs through CVD and MBE methods, ii) investigation of quantum optics of Moire-QEs to identify their potential in quantum logic operation; iii) designing low-loss, high-Q, and large Rabi energy splitting metacavities, fabricating them, and integrating them with Moire-QEs to enable quantum logic operation, and lastly iv) investigation of nonlinear effects and demonstration of cross-phase modulation. The research is anticipated to lay a solid foundation towards creating large periodicity Moire-QEs and to understand their behavior related to single photon nonlinearities. In addition, the project aims to identify clear pathways towards potentially scalable quantum system design, to study room temperature quantum optical nonlinear effects, and quantum state manipulations.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.