Theoretical study of superradiant masing with solid-state spins at room temperature  

作　　者：Qilong Wu Yuan Zhang Hao Wu Shi-Lei Su Kai-Kai Liu Mark Oxborrow Chong-Xin Shan Klaus Mølmer 

机构地区：[1]Henan Key Laboratory of Diamond Optoelectronic Materials and Devices,Key Laboratory of Material Physics Ministry of Education,School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China [2]Institute of Quantum Materials and Physics,Henan Academy of Sciences,Zhengzhou 450046,China [3]Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements,School of Physics,Beijing Institute of Technology,Beijing 100081,China [4]Beijing Academy of Quantum Information Sciences,Beijing 100193,China [5]Department of Materials,Imperial College London,London SW72AZ,UK [6]Niels Bohr Institute,University of Copenhagen,Copenhagen 2100,Denmark

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第6期38-47,共10页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12004344,and 62027816);the Henan Center for Outstanding Overseas Scientists Project(Grant No.GZS201903);the Danish National Research Foundation through the Center of Excellence for Complex Quantum Systems(Grant No.DNRF156);the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie Program(Grant No.754513)。

摘　　要：Steady-state superradiance and superradiant lasing attract significant attentions in the field of optical lattice clocks,but have not been achieved yet due to the technical challenges and atom loss problem.In this article,we propose that their counter-part may be observed in the microwave domain with solid-state spins,i.e.,nitrogen-vacancy center spins and pentacene molecular spins,coupled to microwave resonator at room temperature with realistic technical restrictions.To validate our proposal,we investigate systematically the system dynamics and steady-state by solving quantum master equations for the multi-level and multi-process dynamics of trillions of spins.Our calculations show that the superradiant Rabi oscillations occur firstly due to transitions among different Dicke states,and the subsequent continuous-wave superradiant masing can achieve a linewidth well below millihertz.Our work may guide further exploration of transient and steady-state superradiant masing with the mentioned and other solid-state spins systems.The ultra-narrow linewidth may find applications in deep-space communications,radio astronomy and high-precision metrology.

关 键 词：solid-state spins SUPERRADIANCE MASER 

分 类 号：O469[理学—凝聚态物理]