双Λ型五能级系统中的量子相干效应研究
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摘要
采用锂原子超精细结构的塞曼子能级,与两束偏振方向不同的光场相互作用形成一个双Λ型五能级系统,得到了系统的暗态,并进一步研究了暗态的制备。利用系统的密度矩阵运动方程数值拟合了信号光的吸收、色散曲线,分析了暗态与透明窗口的对应关系。
In this paper,the system formed by a lithium atom interacting with lights having two different polarization directions is studied. The system shows a dual five-level type structure between hyperfine Zeeman sublevels,which results in dark state. The density matrix equations are used to fit the absorption and dispersion curves of the signal light,and the correspondence between the dark state and the transparent window is also analyzed.
In this paper,the system formed by a lithium atom interacting with lights having two different polarization directions is studied. The system shows a dual five-level type structure between hyperfine Zeeman sublevels,which results in dark state. The density matrix equations are used to fit the absorption and dispersion curves of the signal light,and the correspondence between the dark state and the transparent window is also analyzed.
引文
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[6]A.Kasapi,M.Jain,G.Y.Yin,and S.E.Harris,Electromagnetically induced transparency:Propagation dynamics[J].Phys.Rev.Lett.,1995,(74):2447-2450.
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[8]D.Kielpinski,V.Meyer,M.A.Rowe,et al,A DecoherenceFree Quantum Memory Using Trapped Ions[J].Science,2001,(291):1013-1015.
[9]E.Arimondo,S.G.Orrioi.Nonabsorbing Atomic Coherences by Coherent Two photon Transitions in a Three-level Optical Pumbing[J].Nuovo.Cimento Lett.,1976,(17):333-338.
[10]A.Leaama,S.Barreiro,A.Lipsich,et al.Coherent Twofield Spectroscopy of Degenerate Two-level Atomic Systems[J].Phys.Rev.A,1999,61(1):013801.
[11]蔡德欢,张俊香,程荣龙,等.放简并二能级原子系统跃迁中的量子相干效应[J].量子光学学报,2014,20(3):234-240.
[12]蔡德欢,李媛,马荣,等.简并能级系统中的量子相干效应与暗态[J].量子光学学报,2012,18(4):350-356.
[2]J.E.Field,K.H.Hahn,and S.E.Harris,Observation of electromagnetically induced transparency in collisionally broadened lead vapor[J].Phys.Rev.Lett.,1991,(67):3062.
[3]J.Gea-Banacloche,Y.Q.Li,S.Jin,and M.Xiao,Electromagnetically induced transparencyin ladder-type inhomogeneously broadened media:Theory and experiment[J].Phys.Rev.A.,1995,(51):576-584.
[4]M.Fleischhauer,A.Imamoglu,and J.P.Marangos,Electromagnetically induced transparency:Optics in coherent media[J].Rev.Mod.Phys.,2005,(77):633-673.
[5]L.V.Hau,S.E.Harris,Z.Dutton and C.H.Behroozi,Light speed reduction to 17 metersper second in an ultracold atomic gas[J].Nature,1999,(397):594-598.
[6]A.Kasapi,M.Jain,G.Y.Yin,and S.E.Harris,Electromagnetically induced transparency:Propagation dynamics[J].Phys.Rev.Lett.,1995,(74):2447-2450.
[7]S.E.Harris,Electromagnetically induced transparency[J].Phys.Today.1997,50(7):36-41.
[8]D.Kielpinski,V.Meyer,M.A.Rowe,et al,A DecoherenceFree Quantum Memory Using Trapped Ions[J].Science,2001,(291):1013-1015.
[9]E.Arimondo,S.G.Orrioi.Nonabsorbing Atomic Coherences by Coherent Two photon Transitions in a Three-level Optical Pumbing[J].Nuovo.Cimento Lett.,1976,(17):333-338.
[10]A.Leaama,S.Barreiro,A.Lipsich,et al.Coherent Twofield Spectroscopy of Degenerate Two-level Atomic Systems[J].Phys.Rev.A,1999,61(1):013801.
[11]蔡德欢,张俊香,程荣龙,等.放简并二能级原子系统跃迁中的量子相干效应[J].量子光学学报,2014,20(3):234-240.
[12]蔡德欢,李媛,马荣,等.简并能级系统中的量子相干效应与暗态[J].量子光学学报,2012,18(4):350-356.