Bound in continuum states and induced transparency in mesoscopic demultiplexer with two outputs  

作　　者：Z Labdouti T Mrabti A Mouadili E H El Boudouti F Fethi B Djafari-Rouhani 

机构地区：[1]LPMR,Dèpartement de Physique,Facultèdes Sciences,UniversitèMohammed I,Oujda,Morocco [2]LSTA,Dèpartement de Physique,FacultèPolydisciplinaire de Larache,UniversitèAbdelmalek Essaadi,Tètouan,Morocco [3]LPMCER,Dèpartement de Physique,Facultèdes Sciences et Techniques de Mohammedia,UniversitèHassan II,Casablanca,Morocco [4]IEMN,UMR CNRS 8520,UFR de Physique,Universitède Lille,59655 Villeneuve d'Ascq,France

出　　处：《Chinese Physics B》2020年第12期429-437,共9页中国物理B（英文版）

摘　　要：We investigate the electronic transport in a simple mesoscopic cross structure made of two wires(stubs)grafted at the same point along a quantum waveguide.We show that the structure may exhibit important phenomena such as bound in continuum(BIC)states.These states are transformed into electromagnetically induced transparency(EIT)resonance by detuning slightly the lengths of the stubs.The last phenomenon is used to propose and study a mesoscopic demultiplexer device with an input waveguide and two output waveguides.We give closed-form expressions of the geometrical parameters that allow a selective transfer of a given state in the first waveguide without perturbing the second waveguide.The effect of temperature on the transmission resonances is also examined by using Landauer-Büttiker formula.The analytical results of the dispersion relation and transmission and reflection coefficient are obtained using the Green's function method.

关 键 词：mesoscopic structure demultiplexer device bound states in continuum(BIC) EIT resonance 

分 类 号：O469[理学—凝聚态物理]