Subnatural-linewidth fluorescent single photons  

作　　者：HE-BIN ZHANG GAO-XIANG LI YONG-CHUN LIU 

机构地区：[1]State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China [2]Department of Physics,Huazhong Normal University,Wuhan 430079,China [3]Frontier Science Center for Quantum Information,Beijing 100084,China

出　　处：《Photonics Research》2024年第4期625-637,共13页光子学研究（英文版）

基　　金：National Key Research and Development Program of China(2023YFA1407600);National Natural Science Foundation of China(12275145,92050110,91736106,11674390,91836302,11774118,11474119);Fundamental Research Funds for the Central Universities of MOE(CCNU18CXTD01,CCNU17TS0006)。

摘　　要：Subnatural-linewidth single photons are of vital importance in quantum optics and quantum information science.According to previous research, it appears difficult to utilize resonance fluorescence to generate single photons with subnatural linewidth. Here we propose a universally applicable approach to generate fluorescent single photons with subnatural linewidth, which can be implemented based on Λ-shape and similar energy structures.Further, the general condition to obtain fluorescent single photons with subnatural linewidth is revealed.The single-photon linewidth can be easily manipulated over a broad range by external fields, which can be several orders of magnitude smaller than the natural linewidth. Our study can be easily implemented in various physical platforms with current experimental techniques and will significantly facilitate the research on the quantum nature of resonance fluorescence and the technologies in quantum information science.

关 键 词：QUANTUM utilize OPTICS 

分 类 号：O431.2[机械工程—光学工程]