The error threshold for fault tolerant quantum computation with concatenated encoding of qubits is penalized by internal communication overhead. Many quantum computation proposals rely on nearest-neighbour communication, which requires excess gate operations. For a qubit stripe with a width of L+1 physical qubits implementing L levels of concatenation, we find that the error threshold of 2.1x10^-5 without any communication burden is reduced to 1.2x10^-7 when gate errors are the dominant source of error. This ~175X penalty in error threshold translates to an ~13X penalty in the amplitude and timing of gate operation control pulses.
Nearest-neighbour gates are all you need: High-rate quantum low-density parity-check codes on a planar grid
Dahlem Center for Complex Quantum Systems, Freie Universität Berlin（达勒姆复杂量子系统中心，柏林自由大学）；Quantum Software Lab, The University of Edinburgh（爱丁堡大学量子软件实验室）；IQM Quantum Computers（IQM量子计算机公司）；Institute of Mathematics, Johannes Gutenberg-Universität Mainz（美因茨约翰内斯·古腾堡大学数学研究所）；Helmholtz-Zentrum Berlin für Materialien und Energie（柏林亥姆霍兹材料与能源中心）
Bounded-depth spacetime lattice surgery for resource-efficient fault-tolerant quantum computation
Graduate School of Information Science and Technology, The University of Tokyo（东京大学大学院信息理工学系研究科）；Center for Quantum Computing, RIKEN（理化学研究所量子计算中心）；Faculty of Information Science and Electrical Engineering, Kyushu University（九州大学情报理工学府）；International Center for Elementary Particle Physics, The University of Tokyo（东京大学国际基本粒子物理中心）
Solving the traveling salesman problem on $\lceil \log_2 (N-1)! \rceil$ qubits with a variational quantum Kolmogorov--Arnold network: exact-gradient CVaR training and generalization over time-dependent graphs
Parity-unfolded distillation architecture for noise-biased platforms
Parity Quantum Computing Germany GmbH（帕里特量子计算德国有限公司）；Parity Quantum Computing GmbH（帕里特量子计算有限公司）；Parity Quantum Computing France SAS（帕里特量子计算法国股份公司）；Institute for Theoretical Physics, University of Innsbruck（因斯布鲁克大学理论物理研究所）
The Magic Scroll: Leveraging biased noise to improve magic state cultivation in register-based architectures
Silicon Quantum Computing Pty. Ltd.（硅量子计算有限公司）；UNSW Sydney（新南威尔士大学）；Centre of Excellence for Quantum Computation and Communication Technology, School of Physics, UNSW Sydney（新南威尔士大学物理学院量子计算与通信技术卓越中心）
Design Principles for Ultra-High-Rate Quantum Codes
University of Illinois Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Korea Institute for Advanced Study（韩国高等研究院）；Institute of Science Tokyo（东京科学大学）；Massachusetts Institute of Technology（麻省理工学院）
Beyond Monolithic Scaling: Modularity and Heterogeneity as an Architectural Imperative for Utility-Scale Quantum Computing
Yangtze River Delta Industrial Innovation Center of Quantum Science and Technology（长三角量子科学与技术产业创新中心）；China Academy of Electronics and Information Technology（中国电子科技集团公司第二十七研究所）
Oraqle: An Empirical Analysis of Qubit Readout and Discriminators in Quantum Error Correction
Technical University of Munich（慕尼黑工业大学）；Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften（瓦尔特-迈斯纳研究所，巴伐利亚科学院）；Munich Center for Quantum Science and Technology（慕尼黑量子科学与技术中心）
