Photonic Feshbach resonance  

Photonic Feshbach resonance

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作  者:XU DaZhi IAN Hou SHI Tao DONG Hui SUN ChangPu 

机构地区:[1]Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [2]Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China

出  处:《Science China(Physics,Mechanics & Astronomy)》2010年第7期1234-1238,共5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.10474104,60433050 and10704023);the National Basic Research Program of China (Grant Nos.2006CB921205 and 2005CB724508)

摘  要:Feshbach resonance is a resonance for two-atom scattering with two or more channels,in which a bound state is achieved in one channel.We show that this resonance phenomenon not only exists during the collisions of massive particles,but also emerges during the coherent transport of massless particles,that is,photons confined in the coupled resonator arrays linked by a separated cavity or a tunable two level system(TLS).When the TLS is coupled to one array to form a bound state in this setup,the vanishing transmission appears to display the photonic Feshbach resonance.This process can be realized through various experimentally feasible solid state systems,such as the couple defected cavities in photonic crystals and the superconducting qubit coupled to the transmission line.The numerical simulation based on the finite-different time-domain(FDTD) method confirms our assumption about the physical implementation.Feshbach resonance is a resonance for two-atom scattering with two or more channels,in which a bound state is achieved in one channel.We show that this resonance phenomenon not only exists during the collisions of massive particles,but also emerges during the coherent transport of massless particles,that is,photons confined in the coupled resonator arrays linked by a separated cavity or a tunable two level system(TLS).When the TLS is coupled to one array to form a bound state in this setup,the vanishing transmission appears to display the photonic Feshbach resonance.This process can be realized through various experimentally feasible solid state systems,such as the couple defected cavities in photonic crystals and the superconducting qubit coupled to the transmission line.The numerical simulation based on the finite-different time-domain(FDTD) method confirms our assumption about the physical implementation.

关 键 词:Feshbach resonance bound state single-photon transistor 

分 类 号:O4[理学—物理]

 

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