摘要
类似于利用强泵浦光调控介质光学性质实现对原共振吸收光的诱导透明,本文利用实空间量子散射理论研究了如何实现波导光子从全反射到透射的转变.结果表明,通过引入辅助四分之一波长谐振器的耦合,可实现原四分之一波长谐振器对共振微波全反射的透射.利用微纳加工工艺制备了对应上述理论模型的四分之一波长谐振器样品,在极低温条件下对该样品的微波传输特性进行了实验测试,观测到了理论预言的微波波段类电磁诱导透明的部分现象,证实了耦合谐振器的模式重整理论.
The electromagnetic induced transparency(EIT)to atomic systems and its various applications have been extensively investigated,both theoretically and experimentally.In this paper,we study how to similarly verify these phenomena in the waveguide coupled to the transmission line resonators.By making use of real space quantum scattering theory,we calculate the transmission spectrum of the waveguide photons scattered by a single quarter-wavelength transmission line resonator.Our experimental results show that the resonant microwave transporting along the feedline is completely reflected by the resonator.This is similar to the situation of the light absorbed by the resonant atomic medium,and thus its transmission is significantly suppressed.Like the EIT phenomena in atomic gas,wherein the resonant absorption can be significantly suppressed by applying a strong pumping light to control the optical properties of medium,the transport properties of the resonant microwave can be investigated by coupling it into an auxiliary quarter-wavelength resonator in this paper.If the frequency of the auxiliary quarter-wavelength resonator is different from the resonant frequency,the calculated transmission spectrum shows that the coupling with auxiliary quarter-wavelength resonator induces the complete transmission of the resonant microwave.This is one of the features of the EIT-like effect,and can be simply explained as the frequency renormalization of the coupling resonators.Also,by adjusting the coupling strength between the resonators,the width of the microwave transmission spectrum window can be manipulated.Our experimental observations verify such an argument,but the phase shift mutation(another typical signs of the EIT effect)of the resonant microwave cannot be observed.In physics,this is because the interference between the transmitted microwave and the reflected micowave with different frequencies does not take place in the coupling region between the two resonators.It is expected that the effects with the complete EIT-like
作者
高海燕
杨欣达
周波
贺青
韦联福
Gao Hai-Yan;Yang Xin-Da;Zhou Bo;He Qing;Wei Lian-Fu(Information Quantum Technology Laboratory,School of Information Science and Technology,Southwest Jiaotong University,Chengdu 610031,China;College of Science,Chongqing University of Technology,Chongqing 400054,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第6期139-147,共9页
Acta Physica Sinica
基金
国家自然科学基金(批准号:11974290)资助的课题.
关键词
电磁诱导透明
四分之一波长微波谐振器
实空间量子输运理论
耦合诱导传输透明
electromagnetic induced transparency
quarter wavelength microwave resonators
real space quantum transport theory
coupled-induced transport transparency
