We study trajectories of collective spin states of an ensemble of spinors. The spinors considered here are either trapped ions in free space or atoms confined in a cavity, both systems of which are engineered through their interactions with light fields to obey an effective Dicke model. In an appropriate limit of the Dicke model, one obtains one-axis twisting dynamics of the collective spin and evolution after a finite time to a spin cat state, or, in the long-time limit, the Dicke state $|S,0\rangle_x$, conditioned upon there being no photon emissions from the system (i.e., no quantum jumps). If there is a jump, however, the system evolves probabilistically into one of a finite number of entangled-state cycles, where the system then undergoes a persistent sequence of jumps between two Dicke state superpositions in a rotated basis. The different cycles can be distinguished by the frequency at which jumps occur.
Dicke superradiance in degenerate quantum matter: interplay of exchange statistics and spatial confinement
Friedrich-Alexander Universität Erlangen-Nürnberg (FAU)（埃尔朗根-纽伦堡弗里德里希·亚历山大大学）；Max Planck Institute for the Science of Light（马克斯·普朗克光科学研究所）；TU Darmstadt（达姆施塔特工业大学）
Spin-only dynamics of the multi-species nonreciprocal Dicke model
James Franck Institute and the Department of Physics, University of Chicago（芝加哥大学詹姆斯·弗兰克研究所与物理系）；School of Physics and Astronomy, University of St Andrews（圣安德鲁斯大学物理与天文学学院）
Engineered two-photon dissipative confinement of a Kerr-cat qubit using SISIS quantum circuit refrigerator
National Institute of Advanced Industrial Science and Technology (AIST)（产业技术综合研究所）；Univ. Grenoble Alpes（格勒诺布尔阿尔卑斯大学）；CEA（法国原子能和替代能源委员会）；Grenoble INP（格勒诺布尔理工学院）；IRIG（研究信息与影像研究所）；PHELIQS（量子物理与化学研究所）；Institute for Solid State Physics, the University of Tokyo（东京大学固体物理研究所）；Department of Physics, Graduate School of Science, Tokyo University of Science（东京理科大学理学研究科物理学系）；Research Institute for Science and Technology, Tokyo University of Science（东京理科大学理工研究院）
Double-Layered Silica-Engineered Fluorescent Nanodiamonds for Catalytic Generation and Quantum Sensing of Active Radicals
University of Science and Technology of China（中国科学技术大学）；Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China（中国科学技术大学合肥微尺度物质科学国家研究中心）；Hefei National Laboratory, University of Science and Technology of China（中国科学技术大学合肥国家实验室）；Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University（上海大学先进特种钢国家重点实验室上海应用辐射研究所）；School of Biomedical Engineering and Suzhou Institute for Advanced Research, University of Science and Technology of China（中国科学技术大学生物医学工程学院苏州高等研究院）；The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China（中国科学技术大学生命科学与医学院附属第一医院）
Dissipative preparation and stabilization of d-mode multinomial cat states
Institute for Quantum Materials and Technology, Karlsruhe Institute of Technology（卡尔斯鲁厄理工学院量子材料与技术研究所）；Institute for Theory of Condensed Matter, Karlsruhe Institute of Technology（卡尔斯鲁厄理工学院凝聚态理论研究所）；Institut de Science et d’Ingénierie Supramoléculaires (ISIS, UMR7006), University of Strasbourg and CNRS（斯特拉斯堡大学及法国国家科学研究中心超分子科学与工程研究所）
