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）晶体是一类新的材料，其厚度仅为几纳米。最近的研究表明，这些材料比其他已知材料具有独特的优势，并且它们有可能在新一代电子产品，能量转换和存储应用中产生重大影响。当这些2D晶体相互堆叠时，它们形成了一种称为2D莫尔超晶格的材料，这种材料具有不寻常的物理特性，可以实现量子计算。这种材料可以彻底改变当前的信息技术。本研究旨在使用先进的光学测量技术对2D莫尔超晶格的光学行为进行基本了解，并开发最先进的制造技术，以创建用于操纵量子信息的纳米级器件。这些研究活动对培养下一代研究人员具有重大影响。博士生和硕士生以及本科生进行所有必要的实验，参加动手研究活动。研究团队正在准备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”，以接触公众和科学/技术爱好者。令人兴奋的结果也通过会议演讲，期刊出版物和科学评论文章分享。技术摘要：一个强耦合到一个腔的量子发射器，工作到单光子水平，是量子逻辑的关键。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存在很大的挑战。本研究探讨了量子光学的莫尔量子发射器（莫尔-QE）作为单光子发射器和他们的集成与风扇介电亚腔，允许操纵相干态的量子逻辑操作。研究项目包括：i）通过CVD和MBE方法合成光学级、高度结晶和原子清洁的莫尔超晶格，其维持长寿命的莫尔-QE，ii）研究莫尔-QE的量子光学以识别它们在量子逻辑操作中的潜力; iii）设计低损耗、高Q和大拉比能量分裂超腔，制造它们，并将它们与莫尔QE集成以实现量子逻辑操作，以及最后iv）非线性效应的研究和交叉相位调制的演示。该研究有望为创建大周期性莫尔量子阱奠定坚实的基础，并了解其与单光子非线性相关的行为。此外，该项目旨在确定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和量子态操纵。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。

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.