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

最近的努力已经证明了固态量子位、原子量子位、量子传感平台和固态系综之间的显着互连。这不仅为下一代可扩展的紧凑型量子微处理器提供了基础，而且还为用于量子状态转移、传感、计算和通信的变革性互连量子网络奠定了基础。该团队在社区展示的最新量子芯片内互连和处理器的基础上，引领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。这是由于该团队在用于量子通信的高维时频量子位、面向网络链路中的中继器的基于稀土离子的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而得以实现。跨学科工作涵盖应用物理、化学、电气与计算机工程、材料科学、数学和物理。通过与我们的行业和国家实验室同事合作，该团队的努力可以检查互连的量子网络性能参数，即使存在非理想情况也是如此。 QuIC-TAQS 团队研究了三个协同推力，为芯片可扩展互连量子网络建立交叉基础。在 Thrust I 中，QuIC-TAQS 团队通过集成芯片测量检查高维高速率量子光子发射器。这包括高速链路编码中的 8192-希尔伯特空间维度，以及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检查了高保真高效芯片级量子存储器。这是基于固态铒离子，对网络中继器进行动态控制。将研究独特的协议和相干时间改进。在 Thrust 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台。将检查支持网络性能的测量、协议改进和数值模拟。所检查的 QuIC-TAQS 推动力跨越集成量子光子平台、模块化量子源和存储单元，迈向安全互连的量子网络。 QuIC-TAQS 团队的科学主旨与多元化员工队伍的培训相辅相成，重点关注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大学研究站点项目中招募人员，以及加州大学洛杉矶分校-科罗拉多州-加州理工学院在量子科学和技术方面的重点指导工作。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力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.