QuIC-TAQS: Integrated Lithium Niobate Quantum Photonics Platform

QuIC-TAQS：集成铌酸锂量子光子平台

• 批准号: 2137723
• 负责人: Marko Loncar
• 金额: $ 250万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-15 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2137723&HistoricalAwards=false
• 关键词: QuIC; TAQS; Integrated; Lithium; Niobate

Quantum technology, which derives its advantage from the non-intuitive laws of quantum physics, promises to drastically alter the course of computer, network, and sensor development. The realization of this technology relies on the transmission of the smallest units of energy, often across large distances. This is challenging because each unit can be easily misidentified or lost to the environment. Fortunately, particles of light – photons - can circumvent this, and therefore are promising carriers of quantum information even in ambient conditions. However, it is an outstanding challenge to efficiently interface photons with emerging quantum technologies, such as quantum processors and sensors. Thus, realizing so-called quantum interconnects, quantum analog of optical networks that form the backbone of internet, is essential to enable scalability and usability of all quantum technologies. The team is combining expertise in microscale fabrication, non-linear optics, electronics, superconductivity, and material science, to realize transmitter and receiver elements of quantum interconnects for light, all integrated on a photonic chip. This interdisciplinary program provides a unique training ground for students and creates a pipeline for the quantum-ready workforce. The team is actively exploring opportunities for commercialization, leveraging partnerships with industry. Beyond the quantum realm, the team’s work is poised to advance the state of the art in classical communication technology.Optical photons have many attractive properties to realize quantum interconnects, the crucial interfaces between quantum technologies. Photons exist under ambient conditions, can travel long distances, are generally impervious to environmental noise, and can be generated, manipulated, and detected easily. These properties also introduce challenges to realizing quantum technologies that require deterministic interactions between photons, as well as efficient interactions between photons and matter qubits. Both are essential for transmitting quantum information over lossy or long-distance channel, by way of quantum repeaters. Overcoming limitations of existing photonic platforms, the team will develop a scalable, ultra-low-loss, integrated quantum photonic platform based on high-quality thin-film lithium niobate films, and utilize it to realize quantum transmitters and receivers. The approach uses frequency multiplexing and feed-forward to generate and distribute entanglement, leveraging fast single-photon detectors and switches, solid-state quantum memories, and photon pair sources, all integrated on the same chip. Importantly, our team is developing material growth techniques to realize high-quality and ultra-low-loss stoichiometric single-crystal lithium niobate device layers that outperform commercially available material. As an aspirational and stretch goal of the program, the PI and his collaborators are utilizing these components to demonstrate a frequency multiplexed photonic quantum repeater.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.

量子技术从量子物理学的非直觉定律中获得优势，有望极大地改变计算机，网络和传感器开发的过程。这项技术的实现依赖于最小的能量单位的传播，通常是在大距离之间的传播。这是挑战，因为每个单元都可以很容易地被误导或丢失在环境中。幸运的是，光颗粒（照片）可以绕过这一点，因此即使在环境条件下，也可以向它们承诺量子信息的载体。但是，有效地将照片与新兴量子技术（例如量子处理器和传感器）进行有效接触是一个突出的挑战。这是实现所谓的量子互连的，构成互联网骨干的光网络的量子类似物对于启用所有量子技术的可伸缩性和可用性至关重要。该团队正在结合微观制造，非线性光学，电子，超导性和材料科学的专业知识，以实现量子互连的发射器和接收器元素的光，所有量子连接的光线都集成在光子芯片上。该跨学科计划为学生提供了独特的培训场，并为量子准备的劳动力创建了管道。该团队正在积极探索商业化的机会，利用与行业的​​伙伴关系。除了量子领域之外，团队的工作被中毒以推动古典通信技术的最新状态。光学照片具有许多有吸引力的特性，可以实现量子互连，这是量子技术之间的关键接口。光子存在于环境条件下，可以长距离行驶，通常不受环境噪声的影响，并且可以轻松地产生，操纵和检测到。这些属性还引入了挑战，以实现需要照片之间确定性相互作用的量子技术，以及照片与物质数量之间的有效相互作用。两者对于通过量子中继器传输量或长距离通道的量子信息至关重要。克服现有光子平台的局限性，该团队将基于高质量的薄膜硝酸锂膜，开发可扩展的，超低的，集成的量子光子平台，并利用它来实现量子发射器和接收器。该方法使用频率多路复用和前馈来生成和分布纠缠，利用快速的单光子检测器和开关，固态量子记忆和光子对源，所有这些都集成在同一芯片上。重要的是，我们的团队正在开发材料增长技术，以实现高质量和超低的化学计量学单晶锂设备层，以优于市售材料。作为该计划的一个理想和伸展目标，PI及其合作者正在利用这些组件来展示频率多重的光子量子重复者。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响标准通过评估来评估的。

项目成果

Development of Quantum Interconnects (QuICs) for Next-Generation Information Technologies

• DOI: 10.1103/prxquantum.2.017002
• 发表时间: 2021-02-24
• 期刊: PRX QUANTUM
• 影响因子: 9.7
• 作者: Awschalom, David;Berggren, Karl K.;Zhang, Zheshen
• 通讯作者: Zhang, Zheshen

An Atomic Frequency Comb Memory in Rare-Earth-Doped Thin-Film Lithium Niobate

稀土掺杂薄膜铌酸锂原子频率梳存储器

• DOI: 10.1021/acsphotonics.2c01835
• 发表时间: 2023
• 期刊: ACS Photonics
• 影响因子: 7
• 作者: Dutta, Subhojit;Zhao, Yuqi;Saha, Uday;Farfurnik, Demitry;Goldschmidt, Elizabeth A.;Waks, Edo
• 通讯作者: Waks, Edo