Reconfigurable quantum fluid molecules of bound states in the continuum
Antonio Gianfrate, Helgi Sigurdsson, Vincenzo Ardizzone, Hai Chau Nguyen, Fabrizio Riminucci, Maria Efthymiou-Tsironi, Kirk W. Baldwin, Loren N. Pfeiffer, Dimit… 展开作者
Antonio Gianfrate, Helgi Sigurdsson, Vincenzo Ardizzone, Hai Chau Nguyen, Fabrizio Riminucci, Maria Efthymiou-Tsironi, Kirk W. Baldwin, Loren N. Pfeiffer, Dimitrios Trypogeorgos, Milena De Giorgi, Dario Ballarini, Hai Son Nguyen, Daniele Sanvitto
Topological bound states in the continuum are confined wave-mechanical objects that offer advantageous ways to enhance light-matter interactions in compact photonic devices. In particular, their large quality factor in the strong-coupling regime has recently enabled the demonstration of Bose-Einstein condensation of bound-state-in-the-continuum polaritons. Here, we show that condensation into a negative-mass bound state in the continuum exhibits interaction-induced state confinement, opening opportunities for optically reprogrammable molecular arrays of quantum fluids of light. We exploit this optical trapping mechanism to demonstrate that such molecular complexes show hybridization with macroscopic modes with unusual topological charge multiplicity. Additionally, we demonstrate the scalability of our technique by constructing extended mono- and diatomic chains of bound-state-in-the-continuum polariton fluids that display non-Hermitian band formation and the opening of a minigap. Our findings offer insights into large-scale, reprogrammable, driven, dissipative many-body systems in the strong-coupling regime.
Topological characterization of a reconfigurable synthetic-frequency SSH lattice on an integrated lithium-niobate platform
Integrated Photonics and Applications Centre, RMIT University（RMIT大学集成光子与应用中心）；ARC Centre of Excellence in Optical Microcombs for Breakthrough Science (COMBS)（突破性科学光学微梳ARC卓越中心）；Centre of Competence for Terahertz and Hybrid Semiconductor Chips, Center for Physical Sciences and Technology (FTMC)（物理与技术研究中心太赫兹与混合半导体芯片能力中心）
Chiral exceptional bound states in the continuum: a higher-order singularity for on-chip control of quantum emission
School of Integrated Circuits, Harbin Institute of Technology (Shenzhen)（哈尔滨工业大学（深圳）集成芯片学院）；Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University（东南大学物理学院量子材料与器件教育部重点实验室）；Institute for Quantum Science and Technology, National University of Defense Technology（国防科技大学量子科学与技术研究院）
Tunable high-$Q$ Janus-to-chiral bound states in the continuum in bilayer PhCs
School of Physics and Optoelectronics, Xiangtan University（湘潭大学物理与光电工程学院）；School of Physics and Electronics, Hunan University（湖南大学物理学院）；State Key Laboratory of Millimeter Waves, Southeast University（东南大学毫米波国家重点实验室）；Science, Mathematics and Technology (SMT) Cluster, Singapore University of Technology and Design（新加坡科技设计大学科学、数学与技术学部）
The Hong Kong University of Science and Technology (Guangzhou)（香港科技大学（广州））；The Hong Kong University of Science and Technology（香港科技大学）；The Chinese University of Hong Kong, Shenzhen（香港中文大学（深圳））；Sun Yat-sen University（中山大学）
