QuIC-TAQS: A high-dimensional multi-access scalable testbed for the interconnected quantum network

最近的研究表明，固态量子比特、原子量子比特、量子传感平台和固态集成之间存在着显著的相互联系。这不仅为下一代可扩展的紧凑量子微处理器提供了基础，而且为量子态传输、传感、计算和通信的变革性互联量子网络奠定了基础。从最近由社区展示的量子芯片内互连和处理器推进，该团队领导并推进了量子通信和互连的跨学科前沿-分布式纠缠和互连量子网络。这是由该团队在用于量子通信的高维时频量子比特、面向网络链路中继器的稀土离子量子存储器的自旋光子读出、独特的纠错算法和编码以及基本理论界限和数值计算方面的实验贡献实现的。跨学科的努力跨越了应用物理、化学、电子与计算机工程、材料科学、数学和物理。与我们的行业和国家实验室同事一起工作，这个团队的努力允许检查相互连接的量子网络性能参数，即使在存在非理想的情况下。这个QuIC-TAQS团队研究了三个协同推力，以建立面向芯片可扩展互联量子网络的交叉基础。在Thrust I项目中，QuIC-TAQS团队使用集成芯片测量来检测高维高速率量子光子发射器。这包括8192-希尔伯特空间维度在高速率链路编码，随着贝尔状态测量和低抖动检测。在Thrust II中，QuIC-TAQS团队在加州大学洛杉矶分校和加州理工学院的联合测量中研究了高保真度、高效率的芯片级量子存储器。这是基于固态铒离子对网络中继器的动态控制。将研究独特的协议和相干时间的改进。在推力III中，QuIC-TAQS团队检查了强大的量子链路，包括编码和架构，以在加州大学洛杉矶分校建立量子网络测试平台。支持测量，协议改进和网络性能的数值模拟将被检查。所检查的QuIC-TAQS推力跨越集成量子光子平台，模块化量子源和存储单元，朝向安全互连量子网络。这个QuIC-TAQS团队的科学重点与多样化劳动力的培训相辅相成，优先强调代表性不足的研究生和本科生。这包括从少数族裔本科生和社区学院研究项目中招募人员，以及在加州大学洛杉矶分校-科罗拉多分校-加州理工学院开展量子科学与技术方面的指导工作。该奖项反映了美国国家科学基金会的法定使命，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。

Recent efforts have demonstrated remarkable interconnects between solid-state qubits, atomic qubits, quantum sensing platforms, and solid-state ensembles. This not only provides for the next-generation of scalable compact quantum microprocessors, but also lays the foundation towards a transformative interconnected quantum network for quantum state transfer, sensing, computation, and communications. Advancing from the recent quantum intra-chip interconnects and processors demonstrated by the community, this team leads and advances the interdisciplinary frontier for quantum communications and interconnects – that of distributed entanglement and interconnected quantum networks. This is enabled by the team’s experimental contributions in high-dimensional time-frequency qubits for quantum communications, spin-photon readout of rare-earth ion-based quantum memories towards repeaters in network links, unique error correction algorithms and coding, and fundamental theoretical bounds and numerical computations. The interdisciplinary effort spans across Applied Physics, Chemistry, Electrical & Computer Engineering, Materials Science, Mathematics, and Physics. Working together with our industry and national laboratory colleagues, this team effort allows the examination of interconnected quantum network performance parameters, even in the presence of non-idealities. This QuIC-TAQS team studies three synergistic Thrusts to establish the cross-foundations towards a chip-scalable Interconnected Quantum Network. In Thrust I, the QuIC-TAQS team examines high-dimensional high-rate quantum photonic transmitters with integrated chip measurements. This includes a 8192-Hilbert space dimensionality in a high-rate link encoding, along with Bell state measurements and low-jitter detection. In Thrust II, the QuIC-TAQS team examines high-fidelity high-efficiency chip-scale quantum memories, in joint measurements between UCLA and Caltech. This is based on solid-state erbium-ions with dynamical control towards network repeaters. Unique protocols and coherence time improvements will be studied. In Thrust III, the QuIC-TAQS team examines robust quantum links, including coding and architecture, to establish a quantum network testbed at UCLA. Supporting the measurements, protocol improvements and numerical simulations of the network performance will be examined. The examined QuIC-TAQS Thrusts spans across integrated quantum photonic platforms, modular quantum sources and memory units, towards a secure interconnected quantum network. The scientific Thrusts of this QuIC-TAQS team is complemented with training of a diverse workforce, with priority emphasis on underrepresented graduate and undergraduate students. This involves recruitment from minority undergraduate and community college research site programs, focused mentorship efforts at UCLA-Colorado-Caltech in quantum science and technology.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.