Multiple-Photon Resonance Enabled Quantum Interference in Emission Spectroscopy of N_(2)^(+)  

作　　者：Xiang Zhang Qi Lu YaLei Zhu Jing Zhao Rostyslav Danylo Liang Xu Mingwei Lei Hongbing Jiang Chengyin Wu Zhedong Zhang Aurélien Houard Vladimir Tikhonchuk AndréMysyrowicz Qihuang Gong Songlin Zhuang Zengxiu Zhao Yi Liu 

机构地区：[1]Shanghai Key Lab of Modern Optical System,University of Shanghai for Science and Technology.516,Jungong Road,200093 Shanghai,China [2]Department of Physics,National University of Defense Technology,Changsha 410073,China [3]Laboratoire d'Optique Appliquee,ENSTA Paris,Ecole Polytechnique CNRS,Institut Polytechnique de Paris,828 Boulevard des Marechaux,91762 Palaiseau Cedex,France [4]State Key Laboratory for Mesoscopic Physics,School of Physics,Peking University,Bejing 100871,China [5]Department of Physics,City University of Hong Kong,Kowloon,Hong Kong SAR [6]Centre Lasers Intenses et Applications,University of Bordeaux-CNRS-CEA,351 Cours de la Liberation,33405 Talence Cedex France [7]Extreme Light Infrastructure ERIC,ELI Beamlines Facility,25241 Doln Brezany,Czech Republic [8]CAS Center for Excellence in Ultra-intense Laser Science,Shanghai 201800,China

出　　处：《Ultrafast Science》2024年第2期1-7,共7页超快科学（英文）

基　　金：supported in part by the National Natural Science Foundation of China(Grant Nos.12034013,12234020,12204308,12174011,and 12104380);the Shanghai Science and Technology Commission(Grant No.22ZR1444100);the Early Career Scheme(No.9048216);NSFC/RGC Collaborative Research Scheme(No.9054901)from the Research Grants Council of Hong Kong.

摘　　要：Quantum interference occurs frequently in the interaction of laser radiation with materials,leading to a series of fascinating effects such as lasing without inversion,electromagnetically induced transparency,Fano resonance,etc.Such quantum interference effects are mostly enabled by single-photon resonance with transitions in the matter,regardless of how many optical frequencies are involved.Here,we report on quantum interference driven by multiple photons in the emission spectroscopy of nitrogen ions that are resonantly pumped by ultrafast infrared laser pulses.In the spectral domain,Fano resonance is observed in the emission spectrum,where a laser-assisted dynamic Stark effect creates the continuum.In the time domain,the fast-evolving emission is measured,revealing the nature of free-induction decay arising from quantum radiation and molecular cooperativity.These findings clarify the mechanism of coherent emission of nitrogen ions pumped with mid-infrared pump laser and are found to be universal.The present work opens a route to explore the important role of quantum interference during the interaction of intense laser pulses with materials near multiple photon resonance.

关 键 词：PUMPED PUMP QUANTUM 

分 类 号：O413[理学—理论物理]