A Qudit-native Framework for Discrete Time Crystals
Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；Beijing Academy of Quantum Information Sciences（北京量子信息科学研究院）；Hefei National Laboratory（合肥国家实验室）；Songshan Lake Materials Laboratory（松山湖材料实验室）
We introduce a qudit-native framework for engineering rich and robust discrete time crystals (DTCs) by leveraging their internal multilevel structure. Unlike in qubit systems, qudit-based DTCs exhibit distinct dynamical mechanisms that arise only in multilevel systems, as supported by a dressed normal-form analysis in the heating-suppression regime. These mechanisms are manifested in representative systems: we show that subspace-selective embedded kicks stabilize higher-order subharmonic responses and suppress thermalization, as demonstrated in spin-1 chains; in spin-3/2 systems, extending embedded kicks to more levels enables different level partitions and reveals that DTC robustness is dictated by the symmetry of the partition; and in spin-2 platforms, we realize concurrent 2T and 3T DTCs under a unified drive. These findings establish a systematic, hardware-efficient methodology for designing stable and multifunctional Floquet phases of matter on modern qudit-based quantum processors.
Spectator-transition crosstalk in a spin-3/2 silicon-vacancy qudit in silicon carbide revealed by broadband Ramsey interferometry
Gwangju Institute of Science and Technology（光州科学技术院）；Linköping University（林雪平大学）；National Institutes for Quantum Science and Technology (QST)（国立量子科学和技术研究院）；Tohoku University（东北大学）；Korea Multi-purpose Accelerator Complex, Korea Atomic Energy Research Institute（韩国多功能加速器装置，韩国原子能研究所）
HPE Quantum, Emergent Machine Intelligence, HPE Labs（惠普企业量子计算、新兴机器学习实验室）；Quantum Artificial Intelligence Laboratory, NASA Ames Research Center（美国国家航空航天局艾姆斯研究中心量子人工智能实验室）；KBR, Inc.（KBR公司）；USRA Research Institute for Advanced Computer Science（大学空间研究协会先进计算机科学研究所）；School of Electrical Engineering and Telecommunications, UNSW Sydney（新南威尔士大学悉尼分校电气与电信工程学院）；ARC Centre of Excellence for Quantum Computation and Communication Technology（ARC量子计算与通信技术卓越中心）
The robustness condition for general disordered discrete time crystals, and subspace-thermal DTCs from phase transitions between different n-tuple DTCs
本文提出可任意倍周期响应的 n 元无序 Floquet DTC，揭示不同周期 DTC 间相变形成的子空间热 DTC，并基于 2π/n 准能隙与混合长度阈值建立严格鲁棒性框架。
A Robust Large-Period Discrete Time Crystal and its Signature in a Digital Quantum Computer
Bioinformatics Institute, Agency for Science, Technology and Research (A*STAR)（生物信息学研究所，科学与技术研究局（A*STAR））；Department of Physics, National University of Singapore（新加坡国立大学物理系）；Centre for Quantum Technologies, National University of Singapore（新加坡国立大学量子技术中心）；School of Physical and Mathematical Sciences, Nanyang Technological University（南洋理工大学物理与数学科学学院）；Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR)（高性能计算研究所（IHPC），科学与技术研究局（A*STAR））；Department of Physics, Interdisciplinary Research Center for Intelligent Secure Systems, King Fahd University of Petroleum and Minerals（阿卜杜拉国王科技大学物理系，智能安全系统跨学科研究中心）
