The rapid progress seen in the development of quantum coherent devices for information processing has motivated serious consideration of quantum computer architecture and organization. One topic which remains open for investigation and optimization relates to the design of the classical-quantum interface, where control operations on individual qubits are applied according to higher-level algorithms; accommodating competing demands on performance and scalability remains a major outstanding challenge. In this work we present a resource-efficient, scalable framework for the implementation of embedded physical-layer classical controllers for quantum information systems. Design drivers and key functionalities are introduced, leading to the selection of Walsh functions as an effective functional basis for both programming and controller hardware implementation. This approach leverages the simplicity of real-time Walsh-function generation in classical digital hardware, and the fact that a wide variety of physical-layer controls such as dynamic error suppression are known to fall within the Walsh family. We experimentally implement a real-time FPGA-based Walsh controller producing Walsh timing signals and Walsh-synthesized analog waveforms appropriate for critical tasks in error-resistant quantum control and noise characterization. These demonstrations represent the first step towards a unified framework for the realization of physical-layer controls compatible with large-scale quantum information processing.
Agent-assisted experimental strategy transfer across quantum processors
College of Physics and Electronic Engineering, Center for Computational Sciences, Sichuan Normal University（四川师范大学物理与电子工程学院计算科学中心）；Shenzhen SpinQ Technology Co., Ltd.（深圳-spinq科技有限公司）；College of Physics and Optoelectronic Engineering, Shenzhen University（深圳大学物理与光电工程学院）
Certifying nonstabilizerness in quantum processors
INL – International Iberian Nanotechnology Laboratory（国际伊比利亚纳米技术实验室）；Centro de Física, Universidade do Minho（米尼奥大学物理中心）；Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto（波尔图大学理学院物理与天文学系）；Instituto Superior Técnico（里斯本高级技术学院）；Instituto de Telecomunicações（电信研究所）；Instituto de Física, Universidade Federal Fluminense（弗鲁米嫩塞联邦大学物理研究所）
Surface code scaling on heavy-hex superconducting quantum processors
University of Southern California（南加州大学）；Quantum Elements, Inc.（量子元素公司）；Universidad Autonoma de Madrid（马德里自治大学）；Instituto de Fisica Teorica UAM-CSIC（UAM-CSIC理论物理研究所）
Simulating Hadronic Physics on NISQ devices using Basis Light-Front Quantization
量子化学与光阵面量子场论之间的类比首先由Kenneth G. Wilson的理论，为发展量子场论的光阵面量子模拟提供了动力。我们演示了如何计算强子结构可以进行噪声中等规模的量子设备内的基础光前量子化框架。在量子处理器上，我们利用一个有效的光阵面哈密顿量，计算了π介子的光阵面波函数。我们使用变分量子本征求解器来求解基态能量和波函数，然后用它来计算π介子的质量半径、衰减常数、弹性形状因子和电荷半径。
Benchmarking Single-Qubit Gates on a Neutral Atom Quantum Processor
Quantum Technology Centre and Faculty of Physics, M.V. Lomonosov Moscow State University（莫斯科国立大学量子技术中心与物理学院）；Russian Quantum Center（俄罗斯量子中心）；NRC “Kurchatov Institute”（库尔恰托夫国家研究中心）
