我们使用准能量结构时出现的磁通鎓超导电路被周期性地驱动编码量子信息与动态诱导磁通不敏感的甜蜜点。Floquet理论的框架提供了对这些位于远离未驱动量子位的半通量对称点的高相干工作点的直观描述。这种方法在选择通量偏置点和逻辑量子比特状态的能量方面提供了灵活性，如[ \textit{Huang et al., 2020} ]所示。我们表征了系统对调制幅度和直流磁通偏置噪声的响应，并通过实验证明了一个最佳工作点，该点同时对两者的波动不敏感。我们观察到一个40倍的增强与拉姆齐型干涉测量的量子比特相干时间在动态甜蜜点相比，静态操作在相同的偏置点。
英文摘要：
We use the quasienergy structure that emerges when a fluxonium superconducting circuit is driven periodically to encode quantum information with dynamically induced flux-insensitive sweet spots. The framework of Floquet theory provides an intuitive description of these high-coherence working points located away from the half-flux symmetry point of the undriven qubit. This approach offers flexibility in choosing the flux bias point and the energy of the logical qubit states as shown in [\textit{Huang et al., 2020}]. We characterize the response of the system to noise in the modulation amplitude and DC flux bias, and experimentally demonstrate an optimal working point which is simultaneously insensitive against fluctuations in both. We observe a 40-fold enhancement of the qubit coherence times measured with Ramsey-type interferometry at the dynamical sweet spot compared with static operation at the same bias point.
Scalable native multiqubit gates via engineered noncomputational-state interactions in superconducting fluxonium qubits
Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area（粤港澳大湾区量子科学中心）；Institute of Quantum Information and Technology, Nanjing University of Posts and Telecommunications（南京邮电大学量子信息与技术研究院）；State Key Laboratory of Quantum Optics Technologies and Devices, Shanxi University（山西大学量子光学技术与器件国家重点实验室）；Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, and School of Physics, South China Normal University（华南师范大学原子与亚原子结构及量子控制教育部重点实验室、广东省物质结构与基本相互作用卓越研究中心物理学院）；Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, and Frontier Research Institute for Physics, South China Normal University（华南师范大学广东省量子工程与量子材料重点实验室、粤港澳量子物质联合实验室前沿物理研究所）；Nanjing University of Posts and Telecommunications（南京邮电大学）；Shanxi University（山西大学）；South China Normal University（华南师范大学）
Low-frequency fiber-optic vibration sensing with a Floquet-engineered optical lattice clock
National Time Service Center, Chinese Academy of Sciences（中国科学院国家授时中心）；School of Physics, Northwest University（西北大学物理学院）；School of Astronomy and Space Science, University of Chinese Academy of Sciences（中国科学院大学天文与空间科学学院）
Converting qubit relaxation into erasures with a single fluxonium
Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area（粤港澳大湾区量子科学中心）；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）
Dissipative Stabilization of Floquet-Engineered Many-Body Order
Boston University（波士顿大学）；Harvard University（哈佛大学）；University of Maryland, College Park（马里兰大学帕克分校）；Joint Quantum Institute, NIST/University of Maryland（NIST/马里兰大学联合量子研究所）
Probing disorder-driven topological phase transitions via topological edge modes with ultracold atoms in Floquet-engineered honeycomb lattices
Max-Planck-Institut für Quantenoptik（马克斯·普朗克量子光学研究所）；Munich Center for Quantum Science and Technology (MCQST)（慕尼黑量子科学与技术中心）；Fakultät für Physik, Ludwig-Maximilians-Universität（慕尼黑大学物理学院）
Spatiotemporal Non-Hermitian Skin Effect with Floquet-Engineered Ultracold Atoms
Quantum Institute for Light and Atoms, School of Physics, East China Normal University（华东师范大学物理学院光与原子量子研究所）；School of Physics and Astronomy, and Tsung-Dao Lee Institute, Shanghai Jiao Tong University（上海交通大学物理与天文学院及李政道研究所）；Shanghai Branch, Hefei National Laboratory（合肥国家实验室上海分部）；Shanghai Research Center for Quantum Sciences（上海量子科学研究与创新中心）；Collaborative Innovation Center of Extreme Optics, Shanxi University（山西大学极端光学协同创新中心）
Fast CZ gate in hybrid fluxonium-transmon systems with tunable couplers
Nanjing University of Posts and Telecommunications（南京邮电大学）；Nanjing University（南京大学）；Shanxi University（山西大学）；Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area（粤港澳大湾区量子科学中心）
Universidad Nacional de Córdoba（科尔多瓦国立大学）；CONICET, Instituto de Física Enrique Gaviola (IFEG)（阿根廷国家科学研究委员会，恩里克·加维亚拉物理研究所）；Department of Physics, CUNY - The City College of New York（纽约市立学院物理学系）；CUNY-Graduate Center（纽约市立大学研究生中心）
Trimer Dynamics in Floquet-driven arrays of Rydberg Atoms
Università degli Studi di Padova（帕多瓦大学）；INFN Istituto Nazionale di Fisica Nucleare, Sezione di Padova（意大利国家核物理研究所帕多瓦分部）；Padua Quantum Technologies Research Center (QTECH)（帕多瓦量子技术中心）
Collective Floquet engineering between two distant superconducting artificial atoms
National Tsing Hua University（国立清华大学）；Central South University（中南大学）；Zhejiang University（浙江大学）；Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences（中国科学院上海微系统与信息技术研究所）；City University of Hong Kong（香港城市大学）；National Taiwan University（国立台湾大学）；National Chung Cheng University（国立中正大学）
Flux-pump induced degradation of $T_1$ for dissipative cat qubits
Laboratoire de Physique de l’École Normale Supérieure, Inria, ENS, Mines ParisTech, Université PSL, Sorbonne Université（巴黎高等师范学院物理实验室、法国国家信息与自动化研究所、巴黎高等师范学院、国立巴黎高等矿业学校、巴黎文理研究大学、索邦大学）；Alice and Bob
