原子与分子物理学报
原子與分子物理學報
원자여분자물이학보
CHINESE JOURNAL OF ATOMIC AND MOLECULAR PHYSICS
2010年
3期
515-518
,共4页
相干叠加态%受激拉曼绝热通道%多能级∧系统%布居
相榦疊加態%受激拉曼絕熱通道%多能級∧繫統%佈居
상간첩가태%수격랍만절열통도%다능급∧계통%포거
coherent superposition state%fractional stimulated Raman adiabatic passage%serial multi-∧-type system%population
我们给出了在∧型五能级系统中制备|3>态和|5>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,我们设计了新的斯托克斯脉冲和相应的泵浦脉冲.进而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要满足双光子共振.这种方法可以推广到多能级∧系统中制备任意两个下面能级的叠加态.
我們給齣瞭在∧型五能級繫統中製備|3>態和|5>態的連續疊加態的方法,這種方法是部分受激拉曼絕熱通道的擴充.但是它又不同于部分受激拉曼絕熱通道,我們設計瞭新的斯託剋斯脈遲和相應的泵浦脈遲.進而應用數值方法討論瞭脈遲馳豫時間和失諧量對該方法的影響.數值結果錶明要製備任意的疊加態要滿足雙光子共振.這種方法可以推廣到多能級∧繫統中製備任意兩箇下麵能級的疊加態.
아문급출료재∧형오능급계통중제비|3>태화|5>태적련속첩가태적방법,저충방법시부분수격랍만절열통도적확충.단시타우불동우부분수격랍만절열통도,아문설계료신적사탁극사맥충화상응적빙포맥충.진이응용수치방법토론료맥충치예시간화실해량대해방법적영향.수치결과표명요제비임의적첩가태요만족쌍광자공진.저충방법가이추엄도다능급∧계통중제비임의량개하면능급적첩가태.
We obtaiend the technique for creation of arbitrary coherent superposition state of |3>populated state and |5>state in Five-level ∧-type system.It is based on an extension of the technique of fractional stimulated Raman adiabatic passage(f-STIRAP).In this paper,we devise a new pulse sequence of Stokes laser and Pump laser,one can get any desired superposition by changing the ratio of the second Pump pulse to the second Stokes pulse when they vanished.Furthermore,we provide numerical simulation of the robustness against variations in the pulse delay,and the detuning.In order to creatd desired superposition state,we keep two-photon resonance.And this method can be used to create coherent superposition state of any two lower states in serial multi-∧-type System by fraction-STIRAP.
