CAJ | 학술논문

讨论了在串行Λ系统中制备初态和末态的连续叠加态的方法,这种方法是部分受激拉曼绝热通道的扩充.但是它又不同于部分受激拉曼绝热通道,每个斯托克斯脉冲先行相应的泵浦脉冲,但是所有的中间脉冲提前并且同时消失,而第一束斯托克斯脉冲和最后一束泵浦脉冲稍后同时消失.应用数值方法讨论了脉冲驰豫时间和失谐量对该方法的影响.数值结果表明要制备任意的叠加态,不仅要满足双光子共振,而且要满足单光子共振.
토론료재천행Λ계통중제비초태화말태적련속첩가태적방법,저충방법시부분수격랍만절열통도적확충.단시타우불동우부분수격랍만절열통도,매개사탁극사맥충선행상응적빙포맥충,단시소유적중간맥충제전병차동시소실,이제일속사탁극사맥충화최후일속빙포맥충초후동시소실.응용수치방법토론료맥충치예시간화실해량대해방법적영향.수치결과표명요제비임의적첩가태,불부요만족쌍광자공진,이차요만족단광자공진.
A technique for creation of coherent superposition state of initial populated state and final state in serial multi-Λ system is proposed.It is based on an extension of the technique of fractional stimulated Raman adiabatic passage(f-STIRAP).But unlike the f-STIRAP,a new pulse sequence has been proposed,in which each Stoke laser precedes the corresponding pump laser by r.and the first of Stokes pulses and the last of pump pulses should vanish simultaneously after all the intermediate pulses,which vanish simultaneously too. Furthermore,we provide numerical simulation of the robustness against variations in the pulse delay,and the detuning.In order to create desired superposition state,we must not only keep two-photon resonance,but also keep single-photon resonance.